NEET UG CHEMISTRY MCQ: HYDROGEN

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Analyzing +4 | -1

Assertion (A) : Ionisation constant of

\mathrm{CH}_3 \mathrm{COOH}

and

\mathrm{CH}_3 \mathrm{COOD}

are very equal.

Reason (R): The kinetic isotopic effect is not observed in the ionisation of weak acid.

View answer and explanation

Correct option: D

\mathbf{A}

and

\mathbf{R}

both are false

Option D (

\mathbf{A}

and

\mathbf{R}

both are false) is correct because the ionization constants of

\mathrm{CH}_3\mathrm{COOH}

and

\mathrm{CH}_3\mathrm{COOD}

are slightly different due to the kinetic isotopic effect, and this effect is observed in the ionization of weak acids.

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