1.

A solution of a substance 'X' is used in 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»

SOLUTION :(i) The substance .X. is quick lime (calcium oxide) and itsformula is CaO.
(ii) `underset (("Quick lime"))(CaO)+underset(("Water"))(H_(2)O)rarrunderset(("SLAKED lime"))(Ca(OH)_(2))+"Heat"`


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