Question

A solution of a substance ‘X’ is used for whitewashing.

(i) Name the substance ‘X’ and write its formula.

(ii) Write the reaction of the substance ‘X’ named in (i) above with water​

Answer 1

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(1) The solution of the substance used for whitewashing is calcium oxide also called quicklime with chemical formula CaO.

(2) It forms slaċked lime or calcium hydroxide when the quick lime reacts with water

CaO (s) + H2O (l) → Ca(OH)2(aq).

Answer 2

Answer:

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(1) The solution of the substance used for whitewashing is calcium oxide also called quicklime with chemical formula CaO.

(2) It forms slaċked lime or calcium hydroxide when the quick lime reacts with water

CaO (s) + H2O (l) → Ca(OH)2(aq).