1. 2HCl+CaO=CaCl2+H20
2H+2Cl+CaO=Ca+2Cl+H2O
2H+CaO=Ca+H2O
2.Zn+2HCl=ZnCl2+H2
Zn+2H+2Cl=Zn+2Cl+H2O
Zn+2H=Zn+H2O
3.CaCO3+H2SO4=CaSO4+H2O+CO2
Ca+CO3+2H+SO4=CaSO4+H2O+CO2
4.ZnSO4+Ca(OH)2=реакция не пойдет
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Answers & Comments
1. 2HCl+CaO=CaCl2+H20
2H+2Cl+CaO=Ca+2Cl+H2O
2H+CaO=Ca+H2O
2.Zn+2HCl=ZnCl2+H2
Zn+2H+2Cl=Zn+2Cl+H2O
Zn+2H=Zn+H2O
3.CaCO3+H2SO4=CaSO4+H2O+CO2
Ca+CO3+2H+SO4=CaSO4+H2O+CO2
4.ZnSO4+Ca(OH)2=реакция не пойдет