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
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
- (A)Both A and R are true and R is the correct explanation of A✓ Correct
- (B)Both A and R are true but R is NOT the correct explanation of A
- (C)A is true but R is false
- (D)A is false but R is true
Answer: (A)
Solution
Permanganate () is a strong oxidizing agent that oxidizes HCl to chlorine gas:
Since HCl itself gets oxidized, it cannot be used as the medium for permanganate titrations (which would give incorrect results). Both statements are true and R correctly explains why A is true.
Since HCl itself gets oxidized, it cannot be used as the medium for permanganate titrations (which would give incorrect results). Both statements are true and R correctly explains why A is true.
JEE Main · 2022 · 28 Jul 2022 · Shift 2 · Single correct option