3 Tutor System
Starting just at 265/hour

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.

(i) Calcium Oxide or quick lime is the substance used for whitewashing.Hence, the substance ‘X’ is Calcium Oxide and it’s formula is $$CaO$$.
(ii) $$CaO+ H_2 O → Ca(OH)_2$$