Here's the chemical reaction:
CuCO₃(s) + 2HCl(aq) → CuCl₂(aq) + H₂O(l) + CO₂(g)
* CuCO₃ is a green solid, copper carbonate.
* HCl is dilute hydrochloric acid.
* CuCl₂ is copper chloride, a blue-green solution.
* H₂O is water.
* CO₂ is carbon dioxide gas, which is released as bubbles.
The reaction is an example of a double displacement reaction and a gas evolution reaction. The copper carbonate reacts with the hydrochloric acid to form copper chloride, water, and carbon dioxide gas. The carbon dioxide gas is what you would observe as bubbles.
