Compound A, when dissolved in water, gives compound B which is used in whitewashing. Compound B reacts with carbon dioxide to form a white precipitate of compound C. Identify compounds A, B and C. Also write the equations involved.
Compound A reacts with water and gives compound B which is used in whitewashing.
The substance used for whitewashing is CaO (Calcium Oxide). Therefore, compound A is Calcium oxide having formula CaO.
a. Calcium oxide (CaO)
b. calcium hydroxide Ca(OH)2
c. calcium carbonate CaCO3 ppt
CaO + H2O -----> Ca(OH)2
Ca(OH)2 + CO2 -----> CaCO3 + H2O.
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