Final answer:
When hydrochloric acid (HCl) reacts with the carbonate ion (CO3^2-), carbon dioxide (CO2), water (H2O), and chloride ions (Cl^-) are produced in a double replacement reaction.
Step-by-step explanation:
When hydrochloric acid (HCl) reacts with the carbonate anion (CO32-), the products are carbon dioxide (CO2), water (H2O), and chloride ions (Cl-).
This reaction is a double replacement reaction where the hydrogen ion (H+) from HCl replaces one of the carbonate's negative charges, forming HCO3- which then reacts with another H+ to form CO2 and H2O. This type of reaction is also known as an acid-carbonate reaction.