Question

Balance the chemical equation
1. Pb3O4 + 2O2_PbO + O2
2.S+H2SO4_ SO2 + H2O
3.S+ HNO3_ H2SO4+NO2+H2O
4.C+H2SO4_ CO2+H2O+SO2​

Answer 1

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Answer 2

(i) 2 Pb3O4 → 6 PbO + O2

ii) 2 H2SO4 + S → 3 SO2 + 2 H2O

iii) S + 6HNO3  → H2SO4 + 2H2O + 6NO2

iv) C + 2H2SO4 → CO2 + 2H20 + 2SO2