1. C+O2=CO2
CO2+CaO=CaCO3
CaCO3=CaO+CO2 (t)
2. CaO+H2O=Ca(OH)2
Ca(OH)2+2HCl=CaCl2+2H2O
CaCl2+2Na=2NaCl+Ca
3. CuSO4+2HCl=CuCl2+H2O+CO2↑
CuCl2+2NaOH=Cu(OH)2↓+2NaCl
Cu(OH)2=CuO+H2O (t)
4. 2Mg+O2=2MgO
MgO+H2O=Mg(OH)2
Mg(OH)2+SiO2=MgSiO3+H2O (t)
5. 2Al(OH)3=Al2O3+3H2O
Al2O3+6HCl=2AlCl3+3H2O
2AlCl3+6HNO3=2Al(NO3)3+6HCl
2Al(NO3)3=Al2O3+3N2O3 (t)
6.7. Cu+2H2SO4=CuSO4+SO2↑+H2O
CuSO4+2NaOH=Cu(OH)2↓+Na2SO4
Cu(OH)2=CuO+H2O (t)
3CuO+2Al=Al2O3+3Cu
8. 2Ba+O2=2BaO
BaO+H2O=Ba(OH)2
Ba(OH)2+2HCl=BaCl2+2H2O
9. 2Zn+O2=2ZnO
ZnO+2HCl=ZnCl2+H2O
ZnCl2+H2O=Zn(OH)2↓+2HCl
Zn(OH)2+H2SO4=ZnSO4+2H2O
10. 4Na+O2=2Na2O
Na2O+H2O=2NaOH
NaOH+HCl=NaCl+H2O
11. [email protected]
CaO+SO3=CaSO4
CaSO4+2NaOH=Ca(OH)2↓+Na2SO4
Ca(OH)2=CaO+H2O (t)