Disproportionation reactions

Definition

Disproportionation reactions are a type of redox reaction where a single element undergoes both oxidation and reduction, forming two different products. These reactions often involve nonmetals like chlorine and sulfur.

5 Must Know Facts For Your Next Test

1. In disproportionation reactions, the same species is simultaneously oxidized and reduced.
2. A common example is the reaction of chlorine gas with water to form hydrochloric acid and hypochlorous acid: $$Cl_2 + H_2O \rightarrow HCl + HClO$$.
3. These reactions are characteristic of elements that can exist in multiple oxidation states.
4. Disproportionation can be driven by changes in pH or the presence of specific catalysts.
5. Nonmetals like phosphorus, sulfur, and nitrogen frequently participate in disproportionation reactions.

Review Questions

Related terms

Redox Reaction:

A chemical reaction involving the transfer of electrons between two species, resulting in changes in their oxidation states.

Oxidation State:

The degree of oxidation of an atom within a compound or molecule, indicating the number of electrons lost or gained.

Catalyst:

A substance that increases the rate of a chemical reaction without being consumed by the reaction itself.