Redox amphoteric
Redox amphoteric is the property of some chemical substances to act as an oxidizing agent or reducing agent in redox reactions, depending on the reactant . Amphoteric generally refers to substances that can react in two ways.
An example of this is hydrogen peroxide (H 2 O 2 ), which has the mean oxidation state −I for oxygen , which can change into the higher oxidation state ± 0 of O 2 and the lower −II in H 2 O. The redoxamphotere sulfite ion SO 3 2− with the oxidation state + IV for sulfur can also act as a reducing agent, whereby the sulfur is oxidized up to + VI in the SO 4 2− . As an oxidizing agent, sulfite can be reduced to elemental sulfur S 8 (± 0) or sulfide S 2− (−II).