Question

balance the following equation:- MnO-4 + SO2 = Mn+2 + HSO-4​

Answer 1

Answer:

MnO−4. + 8H+. +5e− → Mn2+. + 4H2O

reduction of permanganate

And sulfur dioxide is OXIDIZED to bisulfate, i.e. S(+IV)→S(+VI) …

SO2 + 2H2O → HSO−4. +3H+. +2e−

We take TWO of the former and FIVE of the latter…

2MnO−4. +16H+. +5SO2. + 10H2O + 10e− →2Mn2+. +8H2O + 5HSO−4. +15H+. +10e−

And we cancel away….

2MnO−4 +H+ +5SO2 + 2H2O →2Mn2+ +5HSO−4

hope it will help you....