Question

. Which is the reducing agent in the following reaction ? 2H2S(g) + 302(g) → 2H2O(l) + 2SO2(g) A. O2 B. H2S C. H20 D. SO2​

Answer 1

OPTION (B) IS CORRECT.

(B)$H_{2} S$

Explanation:

• Oxidation and reduction takes place simultaneously in a REDOX REACTION.
• Oxidation means that there is a lose of electrons, whereas reduction means addition of electrons.
• The specie which is undergoing oxidation is called the reducing agent. The specie which is getting reduced is called the oxidizing agent.
• The chemical reaction given is:

        $2H_{2} S(g)+3O_{2} --> 2H_{2} O+2SO_{2}$

• $H_{2} S$ is getting oxidized so it is REDUCING AGENT.
• Therefore, option (B) is correct.