A clear solution of slaked lime is made by dissolving Ca(OH)2in an excess of water.....

Question: A clear solution of slaked lime is made by dissolving Ca(OH)2in an excess of water. This solution is left exposed to air. The solution slowly goes milky as a faint white precipitate forms. Explain why a faint white precipitate forms, support your response with the help of a chemical equation.

The correct answer is : Calcium hydroxide reacts with Carbon dioxide present in the atmosphere to form Calcium carbonate which results in milkiness/white ppt / Formation of Calciumcar bonate (1mark) Ca(OH)₂ + CO₂ → CaCO₃ + H₂O (1mark