C+2H2SO4=CO2+2SO2+2H2O
C(0)-4e=C(+4) 1
S(+6)+2e=S(+4) 2
5K2S+2KMnO4+8H2SO4=2MnSO4+6K2SO4+5S+8H2O
S(-2)-2e=S(0) 5
Mn(+7)+5e=Mn(+2) 2
C+2H2SO4=CO2+2SO2+2H2O
C(0)-4e=C(+4) 1
S(+6)+2e=S(+4) 2
5K2S+2KMnO4+8H2SO4=2MnSO4+6K2SO4+5S+8H2O
S(-2)-2e=S(0) 5
Mn(+7)+5e=Mn(+2) 2