Question

A solution of sulphur dioxide in water reacts with $H_{2}S$ precipitating sulphur. Here sulphur dioxide acts as

• A. As oxidising agent
• B. A reducing agent
• C. An acid
• D. A catalyst

Answer 1

The correct option is A As oxidising agent

When sulphur dioxide reacts with $H_{2}S$, $S{O}_2$ acts as an oxidising agent (gets reduced itself) and $H_{2}S$ acts as a reducing agent (gets oxidised).