Question

Compound A when dissolve in water gives compound B which is used in whitewashing compound B reacts with CO2 to form a white precipitate of compound C when compound C reacts with excess CO2 then compound D is obtained which is soluble in water identify A B C D and write equation involved

Answer 1

Explanation:

A - CaO calcium chloride. B - Ca(OH)2 calcium hydroxide. C - CaCO3 calcium carbonate. Reactions: CaO + H2O = Ca(OH)2 + heat. It is used in whitewashing. Ca(OH)2 + CO2 = CaCO3 + H2O

Answer 2

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=> Because in it two or more reactants combine to form a single product. Now, compound B reacts with carbon dioxide to form a white precipitate of compound C. Therefore, compound C is Calcium Carbonate. The above reaction is an example of a Double Displacement Reaction.