Amount of oxalic acid present in a solution can be determined by its titration with KMnO…

Chemistry · JEE Main · NTA ExamsPrinciples Related To Practical Chemistry

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 HCl, because HCl:
  1. HCl gets oxidised by oxalic acid to chlorine
  2. furnished H+ ions in addition to those from oxalic acid
  3. reduces permanganate to Mn2+
  4. oxidise oxalic acid to carbon dioxide and water

Answer

(A) HCl gets oxidised by oxalic acid to chlorine

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