Предмет: Химия, автор: suxoemoloko22

помогите
1) CaCO3-->CaO-->Ca(OH)2-->CASO4-->CACI-->CA(NO3)2

2) Zn-->ZnO-->ZnSO4-->Zn(OH)2-->ZnO-->Zn

Ответы

Автор ответа: nikolaygr
1

CaCO3=CaO+CO2

CaO+H2O=Ca(OH)2

Ca(OH)2+H2SO4=CaSO4+2H2O

CaSO4+BaCI2=BaSO4+CaCI2

CaCI2+2AgNO3=Ca(NO3)2+2AgCI


2Zn+O2=2ZnO

ZnO+H2SO4=ZnSO4+H2O

ZnSO4+2KOH=Zn(OH)2+K2SO4

Zn(OH)2=ZnO+H2O

ZnO+H2=Zn+H2O

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