Redox reactions are often used
for the following purposes:
1. Test for an oxidizing agent.
In a redox reaction,
an oxidising agent is reduced by a reducing agent,
and a reducing agent is oxidised by an oxidising agent.
Therefore, a reducing agent is often used as a reagent
to test for an oxidizing agent.
Example 1: Potassium iodide
is a reducing agent added to test for oxidising agents
1.
To a portion of unknown solution A, add an equal
volume of dilute nitric acid followed by potassium
iodide solution.
