Question

Compound “A” when dissolved in water gives compound “B” and liberates heat.

Compound “A” is used in white washing. Compound “B” reacts with CO2 to form

a white precipitate of compound “C” Identify compound A,B,C.

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Answer 1

Explanation:

compound A-CaO (calcium oxide)

B -CaOH (calcium hydroxide)

C-CaCO3 (calcium carbonate)