A solution of 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) Substance X is Calcium Oxide whose solution we use in water which is used for white washing. The formula of substance X is Cao.
(ii) Calcium oxide reacts vigorously with water to produce slaked lime (calcium hydroxide) releasing a large amount of heat.
Ca0(s) + H2O(l) → Ca(OH)2(aq)
(Quick Lime) (Water) (Slaked Lime)