Question

Write the chemical names and formula of bleaching powder. (ii) Why does bleaching powder smell of chlorine when exposed to air? (iii) Write chemical equation to represent the action of dilute hydrochloric acid on bleaching powder.

Answer 1

1)Ca(ClO)₂   calcium hypochlorite

2)bcoz it reacts with co₂ present in air and produce Calcium carbonate (CaCO₃) and chlorine (cl) gas.

3)Ca(ClO)2 + HCl = CaCl2 + H2O + Cl2