D-And F-Block Elements Ques 440
Question: Pyrolusite in $ MnO_2 $ is used to prepare $ KMnO_4 $ . Steps are $ MnO_2\xrightarrow{I}MnO_4^{2-}\xrightarrow{II}MnO_4^{-} $ Here, I and II are
Options:
A) fused with KOH/air, electrolytic oxidation
B) fuse with cone. HN03/air, electrolytic oxidation
C) fused with KOH/air, electrolytic reduction
D) All are correct
Show Answer
Answer:
Correct Answer: A
Solution:
$ 2MnO_2\xrightarrow[Oxidation,with,air]{Fused,with,KOH}MnO_4^{2-} $ and $ MnO_4^{2-}\xrightarrow[in,alkaline,solution]{Electrolytic,oxidation}MnO_4^{-} $
