Question

Substances which is used in which washing......... ​

Answer 1

(i) Substance X is Calcium Oxide whose solution we use in water which is used for white washing. The formula of substance X is Cao. (ii) Calcium oxide reacts vigorously with water to produce slaked lime (calcium hydroxide) releasing a large amount of heat.

Answer 2

Answer:

Quicklime is used for whitewashing as it produces calcium hydroxide (CaOH) when it reacts with water (H2O) and absorbs carbon dioxide (CO2) from the environment, as a result, it produces calcium carbonate (CaCO3) which creates a hard coating on the walls.

Explanation:

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