Redox Reactions And Electrochemistry Ques 504
Question: In acid solution, the reaction $ MnO_4^{-},\to ,M{{n}^{2+}} $ involves [MP PMT 1989]
Options:
A) Oxidation by 3 electrons
B) Reduction by 3 electrons
C) Oxidation by 5 electrons
D) Reduction by 5 electrons
Show Answer
Answer:
Correct Answer: D
Solution:
$ MnO_4^{-}\to M{{n}^{2+}} $ . In this reaction $ 5{{e}^{-}} $ are needed for the reduction of $ M{{n}^{2+}} $ as: $ MnO_4^{-}+5{{e}^{-}}\to M{{n}^{2+}} $ .
