Q. Which of the following acid posses oxidising, reducing and complex forming properties?
A) $HCl$
B) $H_{2}SO_{4}$
C) $HNO_{2}$
D) $HNO_{3}$
Explanation
(c)
$HNO_{2}$ can be either reduced to nitric acid (NO) or oxidised to nitric acid and hence it acts both as an oxidising as well as reducing agent
$2HNO_{2} \rightarrow 2NO + H_{2}O + O$
$HNO_{2} + O \rightarrow HNO_{3}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.