The salt formed in the reaction between calcium carbonate (CaCO₃) and hydrochloric acid (HCl) is calcium chloride (CaCl₂) .

Here's the balanced chemical equation for the reaction:

CaCO₃(s) + 2HCl(aq) → CaCl₂(aq) + H₂O(l) + CO₂(g)

This reaction produces calcium chloride, water (H₂O), and carbon dioxide (CO₂).