D-And F-Block Elements Ques 467
Question: If $ KMnO_4 $ is reduced by oxalic acid in an acidic medium then oxidation number of Mn changes from
Options:
A) 4 to 2
B) 6 to 4
C) +7 to+2
D) 7 to 4
Show Answer
Answer:
Correct Answer: C
Solution:
In acid medium $ MnO_4^{-}+8{{H}^{+}}+5{{e}^{-}}\to M{{n}^{2+}}+4H_2O $ (O.S. of Mn changes form +7 to +2).
