Question

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.

Answer 1

X calcium oxide and its formula is CaO


CaO+H2O-Ca(OH)2

Answer 2

We have been given a chemical equation to solve.

We have been given the equation in words and we need to use the appropriate compound symbols and name and complete the balanced equation.

The question given to us is, to find the compound X, which is used for whitewashing and its reaction with water.

The answer is CaO. calcium Oxide.

The balanced chemical reaction is CaO+H2O --> Ca(OH)2