Question

Explain the role of $H_{2}S$ as oxidising / reducing agent. Give suitable examples.

Answer 1

(i) $2H_{2}S+3O_2\to 2S{O}_2+2H_{2}O$
(ii) ${Cl}_2+H_{2}S\to 2HCl+S$

In both these reaction, $H_{2}S$ acts as oxidizing and reucing agent.