Amount of oxalic acid present in a solution can be determined by its titration with KMn O₄ solution in the presence of H₂S O₄. The titration gives unsatisfactory result when carried out in the presence of HCl, because HCl:

(C) reduces permanganate to M n²⁺

(A) gets oxidised by oxalic acid to chlorine

(B) furnishes H⁺ ions in addition to those from oxalic acid

(D) oxaidises oxalic acid to carbon doxide and water

d- and f-Block Elements: JEE Main 2008 Chemistry question

JEE Main 2008 · Annual, Paper 1 · Q758

JEE Main 2008Annual, Paper 1ChemistryEasyd- and f-Block Elements158× since 2002

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

KMn{O_4}

solution in the presence of

{H_2}S{O_4}.

The titration gives unsatisfactory result when carried out in the presence of

HCl,

because

HCl