What is the balanced equation for the neutralization of hydrobromic acid with calcium carbonate?

1 Answer
Jul 23, 2014

The reaction is the sum of two reactions.

Here's how to work them out.

1. The hydrobromic acid neutralizes the calcium carbonate in a double replacement reaction. The products are calcium bromide and carbonic acid.

2HBr + CaCO₃ → CaBr₂ + H₂CO₃

2. The carbonic acid is unstable. It decomposes to form carbon dioxide and water.

H₂CO₃ → CO₂ + H₂O

3. The reaction is the sum of the above two equations.

2HBr + CaCO₃ → CaBr₂ + H₂O + CO₂