Q. In presence of moisture, $SO_{2}$ can
A) Act as oxidant
B) Act as reductant
C) Gain electron
D) Not act as reductant
Explanation
(b)
In presence of moisture ,SO_{2} acts as a reducing agent as it gives nascent hydrogen . It reduces hydrogen peroxide into water.
SO_{2}+2H_{2}O⟶ H_{2}SO_{4}+2H
H_{2}O_{2}+2H⟶2H_{2}O
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.