A compound X used for white washing reacts slowly with one of the gas Y present in air gives a shiny white finishing to the wall by the formation of the compound Z. Name X,Y and Z, and also write the balanced equation.
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Compound X reacts with Y gives Z.
Explanation:
- Calcium oxide, also known as quicklime which is used for white washing. So, compound X is calcium oxide i.e. CaO.
- According to the question this compound X reacts with gas Y to give a shiny white finishing to walls. This will happens when a solution of quicklime with carbon dioxide gas and water present in air to form calcium carbonate. Therefore, compound Y is a gas which is carbon dioxide CO₂.
- As when CaO reacts with CO₂ then calcium carbonate is formed. So, compound Z is calcium carbonate which is CaCO₃.
- Reaction involved are following :-
CaO + H₂O → Ca(OH)₂
Ca(OH)₂ + CO₂ → CaCO₃ + H₂O
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