Са-> CaO->Ca(OH)2->CaCo3->CO2

Question

Са-> CaO->Ca(OH)2->CaCo3->CO2

Answer 1

2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+H2CO3=CaCO3+2H2O
CaCO3+2HCl=CaCl2+CO2+H2O