Zn+H2SO4→ZnSO4+H2↑
2Na+2HCl→2NaCl+H2↑
2Al+6HCl→2AlCl3+3H2↑
Fe+H2SO4→FeSO4+H2↑
Mg+H2SO4→MgSO4+H2↑
Fe+CuSO4→FeSO4+Cu↓
Cu+2AgNO3→Cu(NO3)2+2Ag↓
2Al+3CuSO4→Al2(SO4)3+3Cu↓
Zn+H2SO4→ZnSO4+H2↑
2Na+2HCl→2NaCl+H2↑
2Al+6HCl→2AlCl3+3H2↑
Fe+H2SO4→FeSO4+H2↑
Mg+H2SO4→MgSO4+H2↑
Fe+CuSO4→FeSO4+Cu↓
Cu+2AgNO3→Cu(NO3)2+2Ag↓
2Al+3CuSO4→Al2(SO4)3+3Cu↓