Question

After whitewash the wall, why the walls begin to shine after 2-3 days? Write the chemical equation

Answer 1

Answer:

Ca(OH)2 + CO2 --------------CaCO3+ H2O

Answer 2

Explanation:

in whitewashing ,calcium hydroxide is present and when calcium hydroxide reacts slowly with the carbon dioxide in air to form the thin layer of calcium carbonate on the walls .calcium carbonate is formed after two or three days and gives shining to the walls