Q. What is the oxidation state of iron in Mohr’s salt?
A) +3
B) 0
C) +2
D) +1
Explanation
(c)
Mohr salt $= \left( {NH}_{4} \right)_{2}{SO}_{4}.{FeSO}_{4}.6H_{2}O$
Here, Fe is present as ${FeSO}_{4}$. Therefore, its oxidation state can be calculated with in only ${FeSO}_{4}$.
x+($-$2)=0
x=+2
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.