JEE MAIN - Chemistry (2022 - 28th July Evening Shift - No. 4)
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
Both $$\mathrm{A}$$ and $$\mathrm{R}$$ are true and $$\mathrm{R}$$ is the correct explanation of $$\mathrm{A}$$
Both $$\mathrm{A}$$ and $$\mathrm{R}$$ are true but $$\mathrm{R}$$ is NOT the correct explanation of $$\mathrm{A}$$
$$\mathrm{A}$$ is true but $$\mathrm{R}$$ is false
$$\mathrm{A}$$ is false but $$\mathrm{R}$$ is true
Explanation
$2 \mathrm{KMnO}_4+16 \mathrm{HCl} \rightarrow 2 \mathrm{MnCl}_2+2 \mathrm{KCl}+8 \mathrm{H}_2 \mathrm{O}+\mathrm{Cl}_2$
$\mathrm{HCl}$ is not used in the process of titration because it reacts with the $\left(\mathrm{KMnO}_{4}\right)$ that is used in the process and gets oxidized.
$\mathrm{HCl}$ is not used in the process of titration because it reacts with the $\left(\mathrm{KMnO}_{4}\right)$ that is used in the process and gets oxidized.
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