Question

In the reaction
$2Ag+2H_{2}S{O}_4\to A{g}_{2}S{O}_4+2H_{2}O+S{O}_2$
Sulphuric acid acts as

• A. Oxidizing agent
• B. Reducing agent
• C. Oxidizing agent as well as reducing agent
• D. None of the above

Answer 1

The correct option is A Oxidizing agent

$\stackrel{0}{2Ag}+\stackrel{+1+6-2}{2H_{2}S{O}_4}\to \stackrel{+1+6-2}{A{g}_{2}S{O}_4}+\stackrel{+1-2}{2H_{2}O}+\stackrel{+4-2}{S{O}_2}$
In $H_{2}S{O}_4$, O.S. of S = +6
In $S{O}_2$, O.S. of S = +4
Here sulphur is getting reduced. So, $H_{2}S{O}_4$ acts as oxidising agent.