Disproportionation

Disproportionation or dismutation is used to describe two particular types of chemical reaction:^[1]

• A chemical reaction of the type: 2A → A' + A" where A, A' and A" are different chemical species. While the most common type is a redox reaction, other types are possible. For example: 2H₂O → H₃O⁺ + OH^- is a disproportionation but is not a redox reaction.

• A chemical reaction in which an element is simultaneously reduced and oxidized to form two different products.