Redox Reactions And Electrochemistry Ques 364

Question: Amount of oxalic acid present in a solution can be determined by its titration with KMnO4 solution in the presence of H2SO4 . 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 Mn2+

D) oxidizes oxalic acid to carbon dioxide and water

Show Answer

Answer:

Correct Answer: C

Solution:

[c] HCl being stronger reducing agent reduces MnO4 to Mn2+ and result of the titration becomes unsatisfactory.



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