Ca=CaO=Ca(OH)2=CaCO3=Ca(HCO3)2

Question

Ca=CaO=Ca(OH)2=CaCO3=Ca(HCO3)2

Answer 1

1)2Ca+O2=2CaO
2)CaO+H2O=Ca(OH)2
3)Ca(ОН)2+Н2CO3=CaCO3+2H2O
4)CaCO3+H2CO3=Ca(HCO3)2