H2S + O2 = H2O + SO2
S(-2) -6e = S(+4) 2
O2(0) +4e = 2O(-2) 3
2S(-2) + 3O2(0) = 2S(+4) + 6O(-2)
H2S + O2 = H2O + S
S(-2)-2e = S(0) 2
O2(0) +4e = 2O(-2) 1
2S(-2) + O2(0) = 2S(0) + 2O(-2)
H2S + Ni(NO3)2 = NiS + 2HNO3
H2S + Ni(+2) + 2NO3(-) = NiS + 2H(+) + 2NO3(-)
H2S + Ni(+2) = NiS + 2H(+)