PbS^-II + 4 H₂O₂^-I → PbS^VIO₄^-II + 4 H₂O^-II

This is an oxidation-reduction (redox) reaction:

S^-II - 8 e^- → S^VI (oxidation)

8 O^-I + 8 e^- → 8 O^-II (reduction)

Change the oxidation states

Search by reactants (PbS, H₂O₂)

1.	H2O2 + PbS → PbSO4 + H2O
2.	H2O2 + PbS → PbSO4 + H2
3.	H2O2 + PbS → Pb(OH)2 + SO2 + H2O
4.	H2O2 + PbS → PbSO3 + H2O
5.	H2O2 + PbS → PbO + S + H2O
6.	H2O2 + PbS → PbSO2 + H2O

Search by products (PbSO₄, H₂O)

1 2 3 4 5 6 7
1.	H2O2 + PbS → PbSO4 + H2O
2.	PbO2 + HNO3 + MnSO4 → PbSO4 + HMnO4 + Pb(NO3)2 + H2O
3.	PbS + HNO3 → PbSO4 + NO2 + H2O
4.	PbS + HNO3 → PbSO4 + NO + H2O
5.	PbO2 + Pb + H2SO4 → PbSO4 + H2O
6.	NaNO2 + PbO2 + H2SO4 → PbSO4 + NaNO3 + H2O
7.	PbO2 + MnSO4 + H2SO4 → PbSO4 + HMnO4 + H2O
8.	MoS2 + PbO2 + HNO3 → H2MoO4 + PbSO4 + Pb(NO3)2 + H2O
9.	PbO2 + KBr + H2SO4 → PbSO4 + K2SO4 + H2O + Br2
10.	NaI + PbO2 + H2SO4 → PbSO4 + Na2SO4 + I2 + H2O
1 2 3 4 5 6 7

Search by reactants (PbS, H₂O₂) and by products (PbSO₄, H₂O)

1.	H2O2 + PbS → PbSO4 + H2O