Question

What happens when citric acid reacts with potassium permanganate solution?

Answer 1

When citric acid reacts with potassium permanganate then citric acid acts as reducing agent and it will oxidised potassium permanganate. It reduces itself and do oxidation of permanganate. Citric acid is best known for its reducing agent . And commonly oxidises the substance whenReacts with substance.

Answer 2

Citric     +     Pottasium          -->      Pottasium    +   Permanganic

Acid             Permanganate            Isocitrate            Acid

Or

C₆H₈o₇   +    KMnO₄  -->     C₆H₅K₃O₇    +    HMnO₄

Here, citric acid makes potassium permanganate to chang colors from Purple to Colourless

Hope It will help you :-)