A solution reacts with crushed eggs shells to give a gas that turns lime turns milky.The solution contains?

The solution likely contains Hydrochloric Acid (HCl). Here's why:

1. Eggshells primarily consist of calcium carbonate (CaCO3).
2. When calcium carbonate reacts with hydrochloric acid, it forms calcium chloride, water, and carbon dioxide gas.
3. The chemical reaction can be written as follows: CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g)
4. The carbon dioxide gas produced in this reaction is what causes lime water to turn milky, as it forms a precipitate of calcium carbonate.
5. Therefore, the solution that reacts with crushed eggshells to produce a gas that turns lime water milky likely contains hydrochloric acid.