Question

Carbon dioxide gas is passed through potassium permanganate paper. ​

Answer 1

Explanation:

hope it will help you bro

Answer 2

●Potassium permanganate is a very strong oxidising agent (stronger than sulphuric acid). In acidic medium, Mn gets reduced from its +7 oxidation state to +2 oxidation state.

(n-factor is 5).

$\\ 2KMnO4+3H2SO4⟶K2SO4+2MnSO4+3H2O+5[O]$

Since SO2 is a strong reducing agent, it reduces Mn as denoted by the equation

$\\ \\ 5SO2+2KMnO4+2H2O⟶2H2SO4+2MnSO4+K2SO4$

Both the reactions are viable. Because of the formation of MnSO4 and the disappearance of KMnO4, decolorisation occurs.

But sulphur dioxide reacts with water to produce sulphurous acid and not sulphuric acid.

$\\ \\ SO2+H2O⟶H2SO3$

→Hence, the acidic nature reasoning doesn’t hold good.