Silver iodate
Crystal structure | |||||||||||||||||||
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__ Ag + __ I 5+ __ O 2− | |||||||||||||||||||
General | |||||||||||||||||||
Surname | Silver iodate | ||||||||||||||||||
other names |
Silver (I) iodate |
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Ratio formula | AgIO 3 | ||||||||||||||||||
Brief description |
light-sensitive white odorless solid |
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External identifiers / databases | |||||||||||||||||||
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properties | |||||||||||||||||||
Molar mass | 282.77 g mol −1 | ||||||||||||||||||
Physical state |
firmly |
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density |
5.53 g cm −3 |
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Melting point |
410-470 ° C (decomposition) |
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solubility |
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safety instructions | |||||||||||||||||||
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Thermodynamic properties | |||||||||||||||||||
ΔH f 0 |
−171.1 kJ / mol |
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Silver iodate is an inorganic chemical compound of silver from the group of iodates .
Extraction and presentation
Silver iodate can be obtained by reacting a silver nitrate solution with potassium iodate . It can also be obtained by reacting potassium iodate with a silver sulfate or silver dithionate solution.
properties
Silver iodate is a white, light-sensitive solid that is practically insoluble in water but soluble in ammonia water . When heated, it decomposes into silver iodide and oxygen . It has an orthorhombic crystal structure with the space group Pbc 2 1 (space group no. 29, position 2) .
Individual evidence
- ↑ a b c d e f g h data sheet Silver iodate, 99% at AlfaAesar, accessed on July 19, 2013 ( PDF )(JavaScript required) .
- ↑ a b Roger Blachnik (Ed.): Pocket book for chemists and physicists . Volume III: Elements, Inorganic Compounds and Materials, Minerals . founded by Jean d'Ans, Ellen Lax. 4th, revised and revised edition. Springer, Berlin 1998, ISBN 3-540-60035-3 , pp. 286 ( limited preview in Google Book search).
- ↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Standard Thermodynamic Properties of Chemical Substances, pp. 5-4.
- ↑ GMELIN's Handbook of Inorganic Chemistry, 8th Edition, Verlag Chemie GmbH, Part B2, Silver Compounds, page 434