Chemistry · 2022
JEE Main · 26 July 2022, Shift 2 · Q80
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A:Phenolphthalein is a pH dependent…
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A:Phenolphthalein is a pH dependent indicator, remains colourless in acidic solution and gives pink colour in basic medium.
Reason R: Phenolphthalein is a weak acid. It doesn't dissociate in basic medium. In the light of the above statements, choose the most appropriate answer from the options given below.
Official answer
(3)
$\displaystyle \mathbf{A}$ is true but $\displaystyle \mathbf{R}$ is false.
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JEE Main 2022 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.