Josh Hutcherson and Chemical equation: Difference between pages
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A '''chemical equation''' is a symbolic representation of a [[chemical reaction]].<ref>[[IUPAC]] Compendium of Chemical Terminology </ref> The coefficients next to the symbols and formulae of entities are the absolute values of the [[stoichiometric coefficient|stoichiometric numbers]]. The first chemical equation was diagrammed by [[Jean Beguin]] in 1615. |
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{{Infobox actor |
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| name = Josh Hutcherson |
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| image = |
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| caption = |
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| birthdate = {{birth date and age|1992|10|12}} |
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| birthname = Joshua Ryan Hutcherson |
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| birthplace = [[Union, Kentucky]], [[U.S.A.]] |
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| yearsactive = 2002 ─ present |
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| nickmame = JHutch |
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}} |
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'''Joshua Ryan Hutcherson''' (born [[October 12]], [[1992]]) is an [[United States|American]] film and television actor. He began performing in the early 2000s, appearing in several minor film and television roles. He gained wider exposure with major roles in the 2005 films ''[[Little Manhattan]]'' and ''[[Zathura (film)|Zathura]]'', the 2006 comedy ''[[RV (film)|RV]]'', the 2007 family adventure film ''[[Firehouse Dog]]'', the film adaptation of ''[[Bridge to Terabithia (2007 film)|Bridge to Terabithia]]'', as Jesse Aarons, and a film adaption of the [[Jules Verne]] novel ''[[Journey to the Center of the Earth]]''. On March 30, 2008, Hutcherson won a [[Young Artist Award]] (for Leading Young Actor). |
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== Reading chemical equations == |
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==Biography== |
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When reading a chemical equation there are some points to consider. |
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===Early life=== |
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* Each side of an equation represents a mixture of chemicals. The mixture is written as a set of [[molecular formula]]s, separated by '''+''' symbols. |
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Hutcherson was born in [[Union, Kentucky]], the son of Michelle and Chris Hutcherson. He has a younger brother, Connor,12, born on May 5, 1996 as well as many pets, including 1 dog, Diesel (a [[Boxer (dog)|boxer]]),<ref name="Diesel">{{cite news|last=Copley|first=Rich|coauthors=|title=Young film star calls Northern Ky. home.|pages=|publisher=Lexington Herald-Leader|date=[[2007-04-01]]|url=http://www.kentucky.com/121/story/31571.html|accessdate=2007-04-01}}</ref> and two [[cat]]s, Paws and Jell-O.<ref name="Cats">{{cite news|last=|first=|coauthors=|title=Josh Hutcherson Biography|pages=|publisher=|date=[[2008-08-02]]|url=http://josh-h.com/bio.php|accessdate=2008-08-04}}</ref> He is 5 ft 7 in tall (1.70m). He has wanted to be an actor since he was four years old,<ref name="Hutcherson2">{{cite news|last=|first=|coauthors=|title=N. Kentucky young star, Bee in films|pages=|publisher=The Cincinnati Post|date=[[2006-04-21]]|url=http://news.cincypost.com/apps/pbcs.dll/article?AID=/20060420/LIFE01/604200390/1006/LIFE|accessdate =2007-02-20}}</ref> but had only began auditioning for roles in 2002, at the age of 10 after a successful [[screen test]].<ref name="Hutcherson1">{{cite news|last=|first=|coauthors=|title=Josh: A rising star|pages=|publisher=The Cincinnati Post|date=[[2006-04-28]]|url=http://news.cincypost.com/apps/pbcs.dll/article?AID=/20060428/LIFE/604280359/1005|accessdate =2007-02-20}}</ref> |
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* Each formula is preceded by an optional '''scalar number''' (if no scalar number is written, it is implied that the number is 1). The scalar numbers indicate the relative quantity of molecules in the reaction. For instance, the string 2H<sub>2</sub>O + 3CH<sub>4</sub> represents a mixture containing 2 molecules of H<sub>2</sub>O for every 3 molecules of CH<sub>4</sub>. |
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* The two sides of the equation are separated by an arrow. If the reaction is non-reversible, a right-arrow (→) is used, indicating that the left side represents the mixture of chemicals before the reaction, and the right side indicates the mixture after the reaction. For a [[reversible reaction]], a two-way arrow is used. For example the equation 4Na + O<sub>2</sub> → 2Na<sub>2</sub>O represents a non-reversible reaction. In this reaction, [[sodium]] (Na) and [[oxygen]] (O<sub>2</sub>) are converted to a single molecule, Na<sub>2</sub>O (containing 2 sodium atoms and 1 oxygen atom). We can also see that for every 4 sodium atoms at the beginning of the reaction, a single O<sub>2</sub> molecule will participate, and 2 Na<sub>2</sub>O molecules will result. |
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* A chemical equation does not imply that all reactants are consumed in a [[chemical process]]. For instance a [[limiting reactant]] determines how far a reaction can go. |
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* In an [[ionic equation]] balancing of charge also takes place. In a [[full equation]] all reactants are written as molecules. |
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== Balancing chemical equations == |
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===Career=== |
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The [[conservation of mass | law of conservation of mass]] dictates the quantity of each element does not change in a [[chemical reaction]]. Thus, each side of the chemical equation must represent the same quantity of any particular element. Similarly, the [[charge conservation | charge is conserved]] in a chemical reaction. Therefore, the same charge must be present on both sides of the unbalanced equation. |
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Hutcherson's first role was in the 2002 [[made-for-television]] film, ''House Blend''; in the same year, he appeared in an episode of ''[[ER (television series)|ER]]''. In 2003, he played the lead role in the comedy ''[[Miracle Dogs]]'' (which was released directly-to-video), starred opposite [[Peter Falk]] and [[Timothy Daly]] in the made-for-television film, ''Wilder Days'', and had a minor role in the well-reviewed [[independent film]], ''[[American Splendor (film)|American Splendor]]''. He performed for the [[motion-capture]] imagery in 2004's ''[[The Polar Express (film)|The Polar Express]]'' and in the 2008 ''[[Journey to the Center of the Earth (2008 film)|Journey to the Center of the Earth]]''.<ref name="Hutcherson4"/> |
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One balances a chemical equation by changing the scalar number for each [[molecular formula]]. Simple chemical equations can be balanced by inspection, that is, by trial and error. Another technique involves solving a [[system of linear equations]]. |
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In 2005, Hutcherson appeared in several [[Hollywood]] films. He had a minor role in the [[Will Ferrell]] comedy ''[[Kicking & Screaming]]'' (which was released in May), voiced Markl in the [[animated film]] ''[[Howl's Moving Castle (film)|Howl's Moving Castle]]'' (June), and played the lead roles in ''[[Little Manhattan]]'' (September) and ''[[Zathura (film)|Zathura]]'', which was released in November to positive reviews. The following year, Hutcherson appeared in the comedy ''[[RV (film)|RV]]'', playing the son of [[Robin Williams]]'s character. In his most famous movie so far he played [[Jesse Aarons]] in the drama ''[[Bridge to Terabithia (2007 film)|Bridge to Terabithia]]'', which was filmed in [[New Zealand]]<ref name="Hutcherson4">{{cite news|last=Pickle|first=Betsy|coauthors=|title=‘Terabithia’ stars fall for New Zealand At the movies|pages=|publisher=The Journal Gazette|date=[[2007-03-09]]|url=http://www.fortwayne.com/mld/journalgazette/16868610.htm|accessdate=2007-03-26}}</ref> and released on [[February 16]], [[2007]], performing well critically and commercially. He had not read the [[Bridge to Terabithia (novel)|novel]] that the film is based on before being cast in the role.<ref name="Hutcherson3">{{cite news|last=Westhoff|first=Jeffrey|coauthors=|title=Westhoff: 'Terabithia' stars hope to inspire imaginations|pages=|publisher=Northwest Herald|date=[[2007-02-15]]|url=http://www.nwherald.com/articles/2007/02/15/lifestyle/columnists/doc45d4f4fc4396d715024772.txt|accessdate =2007-02-20}}</ref><ref name="Hutcherson4"/> |
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Example #1. |
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Hutcherson's next role was in ''[[Firehouse Dog]]'' (released on [[April 4]], [[2007]]), in which he played Shane Fahey, a [[firefighter]]'s son who befriends a [[dog]].<ref name="Firehousedog1">{{cite news|last=Jacobs|first=Evan|coauthors=|title=INTERVIEW: Josh Hutcherson Talks Firehouse Dog|pages=|publisher=MovieWeb|date=[[2007-03-30]]|url=http://www.movieweb.com/news/67/18767.php|accessdate=2007-04-01}}</ref> Hutcherson filmed ''Firehouse Dog'' after ''Little Manhattan'' and ''RV'', but before ''Bridge to Terabithia'' even though ''Bridge to Terabithia'' came out first.<ref name="Hutchersonhobbies"/> He also appeared in the "very dark"<ref name="Firehousedog1"/> [[independent film]] drama ''[[Winged Creatures (film)|Winged Creatures]]'',<ref name="Creatures1">{{cite news|last=Fleming|first=Michael|coauthors=|title=Hudson may star in 'Winged'|pages=|publisher=Variety|date=[[2007-03-28]]|url=http://www.variety.com/article/VR1117962040.html?categoryid=13&cs=1|accessdate=2007-04-01}}</ref> and played the nephew of [[Brendan Fraser]]'s character in ''[[Journey to the Center of the Earth (2008 film)|Journey 3-D]]'', a new [[3-D film]] version of ''[[Journey to the Center of the Earth]]''; filming on ''Journey 3-D'' began in [[Montreal]] in June 2006, ended in October<ref name="Hutcherson4"/>and was released on [[July 11]], [[2008]].<ref name="Firehousedog1"/> He is also in a [[Cirque du Freak (film)|movie adaptation]] of the book ''[[Cirque Du Freak]]'' coming out in 2009. |
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Na + O<sub>2</sub> → Na<sub>2</sub>O |
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In order for this equation to be balanced, there must be an equal amount of Na on the left hand side as on the right hand side. As it stands now, there is 1 Na on the left but 2 Na's on the right. This problem is solved by putting a 2 in front of the Na on the left hand side: |
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Hutcherson has said that he would like to appear in "every type" of film [[genre]].<ref name="Firehousedog1"/> |
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:2Na + O<sub>2</sub> → Na<sub>2</sub>O |
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===Personal life=== |
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According to Josh Hutcherson, the favorite movie that he made was [[Zathura]]. Also, he counts The Dark Knight, Talladega Nights and Transformers as a few of his favorite movies. He is also a big fan of the [[Cincinnati Bengals]] - his favourite NFL team. |
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Hutcherson has cited actor [[Jake Gyllenhaal]] as an inspiration.<ref name="Hutcherson3"/> He is [[Homeschooling|homeschooled]], and enjoys [[Mathematics|Math]], especially [[algebra]].<ref name="Hutcherson3" /> Hutcherson lives in [[Union, Kentucky]] with his family, something that he has said helps him "stay grounded". According to Hutcherson, he still "get[s] grounded" by his parents. Hutcherson has stated that he is "not much of a reader"<ref name="Hutcherson4"/> and enjoys [[Automobile|cars]], competing in [[triathlon]]s, [[bowling]], [[football (soccer)|soccer]] and playing his [[guitar]].<ref name="Hutchersonhobbies">{{cite news|last=|first=|coauthors=|title=20th Century Fox - Firehouse Dog - In Theatres : Wednesday|pages=|publisher=MovieVine|date=[[2007-04-01]]|url=http://www.movievine.com/news/article00582.shtml|accessdate=2007-04-01}}</ref> On [[August 11]], [[2007]], Hutcherson served as the Grand Marshal at the [[Indy Racing League]] [[IndyCar Series]] [[Meijer Indy 300]] at [[Kentucky Speedway]].<ref name="Hutcherson_IndyCar"> |
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Hutcherson has two cocker spaniels called Poppy and Frank. |
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{{cite news|last=|first=|coauthors=|title=Hutcherson Will Serve As Grand Marshal at Kentucky |pages=|publisher=IndyCar.com|date=[[2007-04-17]]|url=http://www.indycar.com/news/story.php?story_id=8618|accessdate=2007-04-17}}</ref> |
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On September 2008 he went to Italy for his first time. He visited cities like Rome and Milan, and participated in a local event about kids and cinema.<ref>http://www.ragazziecinema.it/1.5/ultime-notizie/1-latest-news/191-finalmente-bentornato-ragazzi-e-cinema.html</ref> He also played a friendly match with an Italian rookie soccer team. |
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In this there are 2 Na atoms on the left and 2 Na atoms on the right. In the next step the oxygen atoms are balanced as well. On the left hand side there are 2 O atoms and the right hand side only has one. This is still an unbalanced equation. To fix this a 2 is added in front of the Na<sub>2</sub>O on the right hand side. Now the equation reads: |
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===Awards=== |
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On March 30, 2008, Hutcherson won a Young Artist Award (for Leading Young Actor), as did his co-stars [[AnnaSophia Robb]] and [[Bailee Madison]]. |
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:2Na + O<sub>2</sub> → 2Na<sub>2</sub>O |
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==Filmography== |
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{| class="wikitable" |
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Notice that the 2 on the right hand side is "distributed" to both the Na<sub>2</sub> and the O. Currently the left hand side of the equation has 2 Na atoms and 2 O atoms. The right hand side has 4 Na's total and 2 O's. Again, this is a problem, there must be an equal amount of each chemical on both sides. To fix this 2 more Na's are added on the left side. The equation will now look like this: |
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|- bgcolor="#CCCCCC" |
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! Year !! Title !! Role !! Notes |
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:4Na + O<sub>2</sub> → 2Na<sub>2</sub>O |
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|- |
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| rowspan="2"| [[2002 in film|2002]] || ''[[Tusker (film)|Tusker]] || Bubbah || voice |
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This equation is a balanced equation because there is an equal number of atoms of each element on the left and right hand sides of the equation. |
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|- |
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|''[[House Blend]]'' || Nicky Harper || |
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Example #2. |
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:P<sub>4</sub> + O<sub>2</sub> → 2P<sub>2</sub>O<sub>5</sub> |
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| rowspan="3"| [[2003 in film|2003]] || ''[[Miracle Dogs]]'' || Charlie Logan || |
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|- |
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This equation is not balanced because there is an unequal amount of O's on both sides of the equation. The left hand side has 4 P's and the right hand side has 4 P's. So the P atoms are balanced. The left hand side has 2 O's and the right hand side has 10 O's. |
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| ''[[Wilder Days]]'' || Chris Morse || |
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|- |
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|''[[American Splendor (film)|American Splendor]]'' || Robin || |
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To fix this unbalanced equation a 5 in front of the O<sub>2</sub> on the left hand side is added to make 10 O's on both sides resulting in |
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|- |
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| rowspan="3"| [[2004 in film|2004]] || ''[[Motocross Kids]]'' || Toad E. Bartley || |
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:P<sub>4</sub> + 5O<sub>2</sub> → 2P<sub>2</sub>O<sub>5</sub> |
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|- |
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| ''[[The Polar Express (film)|The Polar Express]]'' || Additional child performer: Hero Boy || voice/motion capture |
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The equation is now balanced because there is an equal amount of substances on the left and the right hand side of the equation. |
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|- |
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| ''Eddie's Father'' || Eddie Corbett || TV Movie |
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==Ionic Equations== |
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|- |
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| rowspan="4"| [[2005 in film|2005]] || ''[[Kicking & Screaming]]'' || Bucky Weston || |
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An ionic equation is a chemical equation in which [[electrolyte]]s are written as dissociated [[ion]]s. Ionic equations are used for [[single displacement reaction|single]] and [[double displacement reaction]]s which occur in [[aqueous]] [[solution]]s. For example in the following precipitation reaction: |
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::[[Calcium chloride|CaCl<sub>2</sub>]]<sub>(aq)</sub> + 2[[Silver nitrate|AgNO<sub>3</sub>]]<sub>(aq)</sub> → Ca(NO<sub>3</sub>)<sub>2</sub><sub>(aq)</sub> + 2[[Silver chloride|AgCl]]<sub>(solid)</sub> |
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| ''[[Howl's Moving Castle (film)|Howl's Moving Castle]]'' || Markl || voice (English version) |
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|- |
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the full ionic equation would be: |
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| ''[[Little Manhattan]]'' || Gabe || |
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::Ca<sup>2+</sup> + 2Cl<sup>-</sup> + 2Ag<sup>+</sup> + 2NO<sub>3</sub><sup>-</sup> → Ca<sup>2+</sup> + 2NO<sub>3</sub><sup>-</sup> + 2AgCl<sub>(solid)</sub> |
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|- |
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| ''[[Zathura (film)|Zathura: A Space Adventure]]'' || Walter || |
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and the ''net ionic'' equation would be: |
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|- |
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::2Cl<sup>-</sup><sub>(aq)</sub> + 2Ag<sup>+</sup><sub>(aq)</sub> → 2AgCl<sub>(solid)</sub> |
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| [[2006 in film|2006]] || ''[[RV (film)|RV]]'' || Carl Munro || |
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|- |
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or, in ''reduced'' balanced form, |
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| rowspan="2"| [[2007 in film|2007]] || ''[[Bridge to Terabithia (2007 film)|Bridge to Terabithia]]'' || [[Jesse Aarons]] || |
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::Ag<sup>+</sup> + Cl<sup>-</sup> → AgCl<sub>(solid)</sub>. |
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|- |
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|''[[Firehouse Dog]]'' || Shane Fahey || |
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In this aqueous reaction the Ca<sup>2+</sup> and the NO<sub>3</sub><sup>-</sup> ions remain in solution and are not part of the reaction. They are termed [[spectator ion]]s and do not participate directly in the reaction, as they exist with the same [[oxidation state]] on both the reactant and product side of the chemical equation. They are only needed for charge balance of the original reagents. |
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|- |
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| rowspan="2"| [[2008 in film|2008]] ||''[[Winged Creatures]]'' || Jimmy Jaspersen || |
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In a [[neutralization]] or [[acid]]/[[Base (chemistry)|base]] reaction, the net ionic equation will usually be: |
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|- |
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|''[[Journey to the Center of the Earth (2008 film)|Journey to the Center of the Earth]]'' || Sean || |
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::H<sup>+</sup> + OH<sup>-</sup> → H<sub>2</sub>O |
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|- |
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|rowspan="1"| [[2009 in film|2009]] ||''[[Cirque Du Freak (film)|Cirque Du Freak]]'' || Steve Leonard (Steve Leopard) || in post-production |
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There are a few acid/base reactions that produce a precipitate in addition to the water molecule shown above. An example would be the reaction of [[barium hydroxide]] with [[phosphoric acid]] because the insoluble salt barium phosphate is produced in addition to water. |
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|} |
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Double displacement reactions that feature a [[carbonate]] reacting with an acid have the net ionic equation: |
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::2 H<sup>+</sup> + CO<sub>3</sub><sup>2-</sup> → H<sub>2</sub>O + CO<sub>2</sub> |
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[[Category:Stoichiometry]] |
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==See also== |
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*[[Solubility]] |
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*[[Chemistry]] |
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[[Category:Stoichiometry]] |
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==References== |
==References== |
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<references /> |
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{{reflist}} |
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==External links== |
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*[http://www.joshhutcherson.com Official website] |
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*{{imdb name | id=1242688| name=Josh Hutcherson}} |
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*[http://www.myspace.com/josh__hutcherson Josh Hutcherson MySpace] |
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== External links == |
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{{Lifetime|1992||Hutcherson, Josh}} |
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* [http://funbasedlearning.com/chemistry/chemBalancer/default.htm Classic Chembalancer] - Play Chembalancer, a free online game at FunBasedLearning.com, to learn how to balance equations by inspection |
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[[Category:American child actors]] |
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* [http://sciencesoft.at/index.jsp?link=solve&lang=en Online calculator], determines of the coefficients of a chemical equation |
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[[Category:American film actors]] |
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* [http://adomas.org/bceq/ Free chemical equation balancer], solves chemical equation, works online, low bandwidth |
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[[Category:American television actors]] |
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* [http://www.chembuddy.com/?left=EBAS&right=balancing-chemical-equations Chemical equation balancing program] - works off-line, calculates stoichiometry and limiting reagents, balances charge. |
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[[Category:Kentucky actors]] |
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* [http://www.webqc.org/balance.php Online Chemical Equation Balancer] Balances equation of any chemical reaction (full or half-cell) in one click. |
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[[Category:People from Kentucky]] |
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* [http://mgccl.com/2007/09/20/balance-chemical-equations Balance chemical equations] Teaches how to balance chemical equations |
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[[Category:Stoichiometry]] |
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[[Category:Equations]] |
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[[de:Reaktionsgleichung]] |
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[[ar:جوش هوتشرسن]] |
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[[el:Χημική εξίσωση]] |
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[[de:Josh Hutcherson]] |
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[[es:Ecuación química]] |
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[[fr:Équation chimique]] |
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[[hi:रासायनिक समीकरण]] |
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[[id:Josh Hutcherson]] |
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[[id:Persamaan reaksi]] |
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[[it:Equazione chimica]] |
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[[ln:Mokokano]] |
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[[ja:ジョシュ・ハッチャーソン]] |
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[[pl:Josh Hutcherson]] |
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[[ja:化学反応式]] |
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[[simple:Chemical equation]] |
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[[th:จอช ฮัทเชอร์สัน]] |
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[[tl:Ekwasyong kimikal]] |
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[[ta:வேதியியற் சமன்பாடு]] |
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Revision as of 22:06, 10 October 2008
A chemical equation is a symbolic representation of a chemical reaction.[1] The coefficients next to the symbols and formulae of entities are the absolute values of the stoichiometric numbers. The first chemical equation was diagrammed by Jean Beguin in 1615.
Reading chemical equations
When reading a chemical equation there are some points to consider.
- Each side of an equation represents a mixture of chemicals. The mixture is written as a set of molecular formulas, separated by + symbols.
- Each formula is preceded by an optional scalar number (if no scalar number is written, it is implied that the number is 1). The scalar numbers indicate the relative quantity of molecules in the reaction. For instance, the string 2H2O + 3CH4 represents a mixture containing 2 molecules of H2O for every 3 molecules of CH4.
- The two sides of the equation are separated by an arrow. If the reaction is non-reversible, a right-arrow (→) is used, indicating that the left side represents the mixture of chemicals before the reaction, and the right side indicates the mixture after the reaction. For a reversible reaction, a two-way arrow is used. For example the equation 4Na + O2 → 2Na2O represents a non-reversible reaction. In this reaction, sodium (Na) and oxygen (O2) are converted to a single molecule, Na2O (containing 2 sodium atoms and 1 oxygen atom). We can also see that for every 4 sodium atoms at the beginning of the reaction, a single O2 molecule will participate, and 2 Na2O molecules will result.
- A chemical equation does not imply that all reactants are consumed in a chemical process. For instance a limiting reactant determines how far a reaction can go.
- In an ionic equation balancing of charge also takes place. In a full equation all reactants are written as molecules.
Balancing chemical equations
The law of conservation of mass dictates the quantity of each element does not change in a chemical reaction. Thus, each side of the chemical equation must represent the same quantity of any particular element. Similarly, the charge is conserved in a chemical reaction. Therefore, the same charge must be present on both sides of the unbalanced equation.
One balances a chemical equation by changing the scalar number for each molecular formula. Simple chemical equations can be balanced by inspection, that is, by trial and error. Another technique involves solving a system of linear equations.
Example #1. Na + O2 → Na2O
In order for this equation to be balanced, there must be an equal amount of Na on the left hand side as on the right hand side. As it stands now, there is 1 Na on the left but 2 Na's on the right. This problem is solved by putting a 2 in front of the Na on the left hand side:
- 2Na + O2 → Na2O
In this there are 2 Na atoms on the left and 2 Na atoms on the right. In the next step the oxygen atoms are balanced as well. On the left hand side there are 2 O atoms and the right hand side only has one. This is still an unbalanced equation. To fix this a 2 is added in front of the Na2O on the right hand side. Now the equation reads:
- 2Na + O2 → 2Na2O
Notice that the 2 on the right hand side is "distributed" to both the Na2 and the O. Currently the left hand side of the equation has 2 Na atoms and 2 O atoms. The right hand side has 4 Na's total and 2 O's. Again, this is a problem, there must be an equal amount of each chemical on both sides. To fix this 2 more Na's are added on the left side. The equation will now look like this:
- 4Na + O2 → 2Na2O
This equation is a balanced equation because there is an equal number of atoms of each element on the left and right hand sides of the equation.
Example #2.
- P4 + O2 → 2P2O5
This equation is not balanced because there is an unequal amount of O's on both sides of the equation. The left hand side has 4 P's and the right hand side has 4 P's. So the P atoms are balanced. The left hand side has 2 O's and the right hand side has 10 O's.
To fix this unbalanced equation a 5 in front of the O2 on the left hand side is added to make 10 O's on both sides resulting in
- P4 + 5O2 → 2P2O5
The equation is now balanced because there is an equal amount of substances on the left and the right hand side of the equation.
Ionic Equations
An ionic equation is a chemical equation in which electrolytes are written as dissociated ions. Ionic equations are used for single and double displacement reactions which occur in aqueous solutions. For example in the following precipitation reaction:
the full ionic equation would be:
- Ca2+ + 2Cl- + 2Ag+ + 2NO3- → Ca2+ + 2NO3- + 2AgCl(solid)
and the net ionic equation would be:
- 2Cl-(aq) + 2Ag+(aq) → 2AgCl(solid)
or, in reduced balanced form,
- Ag+ + Cl- → AgCl(solid).
In this aqueous reaction the Ca2+ and the NO3- ions remain in solution and are not part of the reaction. They are termed spectator ions and do not participate directly in the reaction, as they exist with the same oxidation state on both the reactant and product side of the chemical equation. They are only needed for charge balance of the original reagents.
In a neutralization or acid/base reaction, the net ionic equation will usually be:
- H+ + OH- → H2O
There are a few acid/base reactions that produce a precipitate in addition to the water molecule shown above. An example would be the reaction of barium hydroxide with phosphoric acid because the insoluble salt barium phosphate is produced in addition to water.
Double displacement reactions that feature a carbonate reacting with an acid have the net ionic equation:
- 2 H+ + CO32- → H2O + CO2
See also
References
External links
- Classic Chembalancer - Play Chembalancer, a free online game at FunBasedLearning.com, to learn how to balance equations by inspection
- Online calculator, determines of the coefficients of a chemical equation
- Free chemical equation balancer, solves chemical equation, works online, low bandwidth
- Chemical equation balancing program - works off-line, calculates stoichiometry and limiting reagents, balances charge.
- Online Chemical Equation Balancer Balances equation of any chemical reaction (full or half-cell) in one click.
- Balance chemical equations Teaches how to balance chemical equations