Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: Permanganate titrations are not performed in presence of hydrochloric acid.
Reason R

Question

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: Permanganate titrations are not performed in presence of hydrochloric acid.
Reason R: Chlorine is formed as a consequence of oxidation of hydrochloric acid.

In the light of the above statements, choose the correct answer from the options given below:

Canvas Classes · Accepted Answer

Step 1 — Evaluate Assertion A:

is a strong oxidising agent. In the presence of HCl:

oxidises  to , consuming extra  beyond what is needed for the analyte. This gives erroneous (higher) results.

Therefore, permanganate titrations are NOT performed in HCl medium —  is used instead.
Assertion A is TRUE ✓

Step 2 — Evaluate Reason R:

The reason is exactly as stated:  oxidises HCl, producing . This is the correct chemical explanation for why HCl cannot be used.
Reason R is TRUE ✓ and is the co

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