D-And F-Block Elements Ques 442

Question: KMnO4 acts as an oxidizing agent in acidic medium. The number of moles of KMnO4 needed to react with one mole of sulphide ions in acidic solution is

Options:

A) 2/5

B) 3/5

C) 1/5

D) 4/5

Show Answer

Answer:

Correct Answer: A

Solution:

5S2+2MnO4+16H+2Mn2+5S+8H2O

5 moles of sulphide ion require 2 moles of KMnO4.

Thus, 1 mole of sulphide ion requires 25 moles of KMnO4 .



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