Question

Reaction between:
1.citric acid and potassium permanganate
2.sulphur dioxide and potassium dicromate
Plz answer fast ... Very urgent

Answer 1

Reaction between citric acid and potassium permanganate: 3KMnO4 + C6H8O7 — 3HMnO4 +C6H65K3O7 

Reaction between sulphur dioxide and potassium dichromate (Sulphuric acid is also involved): K2Cr2O7+ 3SO2+ H2SO4 -- Cr2(SO4)3+ K2SO4 + H2O

Hope it helps! :)

Answer 2

Answer:

it is a characteristic of change in colour