Question

Is ${\mathrm{KMnO}}_4$ a self-indicator?

Answer 1

Explanation:

1. Indicator: A substance which differentiates the acid and base is called an indicator.
2. Examples of indicators: Turmeric, litmus paper etc.
3. Self indicator: The indicator which participates itself in the reaction and indicates the endpoint of others.
4. ${\mathrm{KMnO}}_4$ is a strong oxidizing agent and it is used in the titration of oxalic acid.
5. Potassium per magnet is act as a self indicator in the above-mentioned titration.

Hence, ${\mathrm{KMnO}}_4$ is a self-indicator.