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compound 'A' ...

Question

compound 'A' when dissolved in water gives compound 'B' and liberates heat .Compound 'B' reacts with Co2 to form a white precipitate of compound 'C'
Identify compound 'A' 'B' 'C' . also write the equation involved

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Solution

Compound A is calcium oxide (commonly known as quick lime). It has the chemical formula CaO. Compound B is calcium hydroxide, commonly known as slaked lime. It has the chemical formula Ca(OH)₂. Compound C is calcium carbonate. It has the chemical formula CaCO₃. Following are the involved chemical reactions:
1) Reaction of calcium oxide and water
CaO + H₂O â†’ Ca(OH)₂
2) Reaction of calcium hydroxide and carbon dioxide
Ca(OH)₂ + CO₂ â†’ CaCO₃ + H₂O

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