Question

A solution reacts with crushed egg shells to give a gas that turns limewater milky the solution contains what explain

Answer 1

egg cell contain calcium carbonate which react with HCL to liberate cow gas that turn lime water milky

Answer 2

ANSWER :

HCl

Lime water turns milky and hence the gas is carbon-dioxide.

We already know that egg shells contain calcium carbonate .

Hence the only thing that can displace is HCl .

Thus the answer is HCl as only an acid can perform the above reaction and displace the calcium carbonate to liberate an acidic gas.

Reaction :

CaCO₃ + 2HCl => CaCl₂ + H₂O + CO₂

CO₂ + Ca(OH)₂=>CaCO₃ + H₂O ( limewater turns milky )