_HCI+_CaCo³-CaCI²+_H²O+_CO²? ?

The chemical reaction you have provided is not balanced. To balance it, the equation should be:

2HCI + CaCO3 + CaCl2 + H2O + CO2 -> CaCl2 + 2H2O + 2CO2

This balanced equation shows the reaction between hydrochloric acid (HCI), calcium carbonate (CaCO3), calcium chloride (CaCl2), water (H2O), and carbon dioxide (CO2).

HCl + CaCO3 → CaCl2 + H2O + CO2↑