A solution of a substance ‘X’ is used for white washing.
(i) Name the substance ‘X’ and write its formula.
(ii) Write the reaction of the substance ‘X’ named in (i) above with water.
(i) The substance whose solution in water is used for whitewashing is calcium oxide (or quick lime). Its formula is CaO.
(ii) $CaO(s) + H_2O(l) \rightarrow Ca(OH)_2(aq)$
calcium oxide calcium hydrogen
(quick lime) (Slaked lime )
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