pBlock ElementsII 2 Question 20
«««< HEAD
20. Chlorine acts as a bleaching agent only in the presence of
======= ####20. Chlorine acts as a bleaching agent only in the presence of
3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed (a) dry air
(b) moisture
(c) sunlight
(d) pure oxygen
$(1983,1 \mathrm{M})$
Show Answer
Solution:
- Moist chlorine gives nascent oxygen, act as oxidising agent :
$$ \begin{aligned} & \mathrm{Cl}{2}+\mathrm{H}{2} \mathrm{O} \longrightarrow \mathrm{HCl}+\mathrm{HOCl} \ & \mathrm{HOCl} \longrightarrow \mathrm{HCl}+[\mathrm{O}] \ & \begin{array}{l} \text { nascent oxygen } \ \text { (bleaching action } \end{array} \end{aligned} $$
