Redox Reactions And Electrochemistry Ques 364

Question: Amount of oxalic acid present in a solution can be determined by its titration with $ KMnO_4 $ solution in the presence of $ H_2SO_4 $ . The titration gives unsatisfactory result when carried out in the presence of HCI. Because HCI:

Options:

A) gets oxidized by oxalic acid to chlorine

B) Furnishes $ {{H}^{+}} $ ions in addition to those from oxalic acid

C) Reduces permanganate to $ M{{n}^{2+}} $

D) oxidizes oxalic acid to carbon dioxide and water

Show Answer

Answer:

Correct Answer: C

Solution:

[c] $ HCl $ being stronger reducing agent reduces $ MnO_4^{-} $ to $ M{{n}^{2+}} $ and result of the titration becomes unsatisfactory.



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