Cu + 2 H2SO4 → 2 H2O + SO2 + CuSO4
Zn + 2 HBr → H2 + ZnBr2
2 Al + 3 H2SO4 → Al2(SO4)3 + 3 H2
Mg + 2 HBr → H2 + MgBr2
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Cu + 2 H2SO4 → 2 H2O + SO2 + CuSO4
Zn + 2 HBr → H2 + ZnBr2
2 Al + 3 H2SO4 → Al2(SO4)3 + 3 H2
Mg + 2 HBr → H2 + MgBr2