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

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 HCl because HCl (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) Oxidises oxalic acid to carbon dioxide and water

Tardigrade Admin · Accepted Answer

Titration of oxalic acid by KMnO4 in the presence of HCl gives unsatisfactory result because HCl is a better reducing agent than oxalic acid and HCl reduces preferably MnO4 to Mn2+

Q. Amount of oxalic acid present in a solution can be determined by its titration with $K M n O_{4}$ solution in the presence of $H_{2} S O_{4}$ . The titration gives unsatisfactory result when carried out in the presence of $H Cl$ because $H Cl$

gets oxidized by oxalic acid to chlorine

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

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

Oxidises oxalic acid to carbon dioxide and water

Titration of oxalic acid by $K M n O_{4}$ in the presence of $H Cl$ gives unsatisfactory result because $H Cl$ is a better reducing agent than oxalic acid and $H Cl$ reduces preferably $M n O_{4}$ to $M n^{2 +}$

Q. Amount of oxalic acid present in a solution can be determined by its titration with KMnO4​ solution in the presence of H2​SO4​. The titration gives unsatisfactory result when carried out in the presence of HCl because HCl

gets oxidized by oxalic acid to chlorine

Furnishes H+ ions in addition to those from oxalic acid

Reduces permanganate to Mn2+

Oxidises oxalic acid to carbon dioxide and water

Titration of oxalic acid by KMnO4​ in the presence of HCl gives unsatisfactory result because HCl is a better reducing agent than oxalic acid and HCl reduces preferably MnO4​ to Mn2+

Q. Amount of oxalic acid present in a solution can be determined by its titration with $K M n O_{4}$ solution in the presence of $H_{2} S O_{4}$ . The titration gives unsatisfactory result when carried out in the presence of $H Cl$ because $H Cl$

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

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

Titration of oxalic acid by $K M n O_{4}$ in the presence of $H Cl$ gives unsatisfactory result because $H Cl$ is a better reducing agent than oxalic acid and $H Cl$ reduces preferably $M n O_{4}$ to $M n^{2 +}$