Question

balance the equation H2S + KMnO4 + H2 S o4 gives khso4 + mnso4 + S + H2O​

Answer 1

Answer:

2KMnO4 + 3H2SO4 +5H2S > K2SO4 + 2MnSO4+8H2O+5S

Explanation:

Reduction reaction:

MnO4- + 5e- + 8 H+ > Mn2+ 4 H2O............(i)

Oxidation reaction :

S2- – 2e- > S....................(ii)

Now,

(i)×2 + (ii)× 5 >

2MnO4- + 10e- + 16H+ > 2Mn2+ 8H2O

5S2- – 10e- > 5S

Total raction

2MnO4- + 16H+ + 5S2- > 2Mn2+ 8H2O + 5S

Then both sides additng ( K+, SO4 2-)

2KMnO4 + 3H2SO4 +5H2S > K2SO4 + 2MnSO4+8H2O+5S