Question

what happens when calcium carbonate is made to react with hydrochloric acid give the equation of the reaction also

Answer 1

Reaction with calcium carbonate.Calcium carbonate reacts with acids to produce a calcium salt, water and carbon dioxide: calcium carbonate +hydrochloric acid → calcium chloride + water + carbon dioxide.
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Answer 2

Experiment: Calcium carbonate is made to react with hydrochloric acid:

Observations:

• Hydrochloric acid dissolves calcium carbonate and initially forms calcium chloride and a weak and unstable carbonic acid.

• Unstable carbonic acid further breaks down into the water and releases carbon dioxide gas.

The equation for the reaction:

$\mathrm{CaCo}_{3}(s)+2 \mathrm{HCl} \rightarrow \mathrm{CaCl}_{2}(a q)+\mathrm{H}_{2} \mathrm{O}+\mathrm{Co}_{2}(g)$

Inference: This reaction is based on two principles:

• It is an acid-base exchange reaction, where an acid reacts with a base to form salt and water.

• When carbonates react with acid, they produce salt and water and releases carbon dioxide gas.

• This reaction is a first-order reaction and rate of reaction increases with the increasing of hydrochloric acid concentration.