Zn+H2SO4==ZnSO4+H2
ZnO+H2SO4==ZnSO4+H2OZn+H2SO4==ZnSO4+H2 Zn+CuSO4==ZnSO4+Cu
Zn+H2SO4=ZnSO4+H2Zn+CuSO4=ZnSO4+Cu