What is observed in the reaction between an acid and a carbonate?

Acids are substances that dissolve in water to generate an excess of H⁺ ions. They react with bases to produce a salt and water. With metal carbonates, products include a salt of that metal (depending on the acid and metal), water and carbon dioxide. For example:Sodium carbonate (NaCO₃) + Hydrogen Chloride (HCl) -> Sodium chloride (NaCl) + water (H₂O) + carbon dioxide (CO₂₎₎Thus, observations in this reaction include bubbling from the release of CO_2. When collected, the gas turns lime water milky.