Question

KMnO4 is not acidified by HCl instead of H2SO4 because
(a) H2 SO4 is stronger acid than HCl
(b) HCl is oxidised to Cl2 by KMnO4
(c) H2SO4 is dibasic acid
(d) rate is faster in presence of H2SO4

Answer 1

Explanation:

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Answer 2

Answer:

The correct answer is Option (b): $Hcl$ is oxidised to $Cl_2$ by $KMnO_4$

Explanation:

• Because it combines with the indicator potassium permanganate ($KMnO_4$) used in the titration procedure, hydrochloric acid ($HCl$) is rarely employed.
• It oxidises when it comes into contact with $KMnO_4$ solution, resulting in the release of $Cl$ gas.
• The final value of the indicator employed can differ substantially from the real value of the entire reaction at the end of the operation.
• This will cause the entire experiment to be disrupted.
• In terms of volumetric analysis, $HCl$cannot be used to acidify $KMnO_4$.