а)2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+2HNO3=Ca(NO3)2+2H2O
Ca(NO3)2+Na2CO3=
CaCO3+2NaNO3
б)4P+5O2=2P2O5
P2O5+3H2O=2H3PO4
H3PO4+3NaOH=Na3PO4+3H2O
в)Zn+2HCl=ZnCl2+H2
ZnCl2+2NaOH=Zn(OH)2+2NaCl
Zn(OH)2=ZnO+H2O
ZnO+C=CO+Zn
а)2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+2HNO3=Ca(NO3)2+2H2O
Ca(NO3)2+Na2CO3=
CaCO3+2NaNO3
б)4P+5O2=2P2O5
P2O5+3H2O=2H3PO4
H3PO4+3NaOH=Na3PO4+3H2O
в)Zn+2HCl=ZnCl2+H2
ZnCl2+2NaOH=Zn(OH)2+2NaCl
Zn(OH)2=ZnO+H2O
ZnO+C=CO+Zn