CaO -> CaCl2 -> CaCO3 -> Ca (HCO3)2 -> CaCO3 -> CaO

Question

CaO -> CaCl2 -> CaCO3 -> Ca (HCO3)2 -> CaCO3 -> CaO

Answer 1

1. СаО+2НСл--- СаСл2+Н2О
2. СаСл2+Н2СО3--- СаСО3+НСл