Assertion: $\left(\mathrm{CH}_3\right)_3 \mathrm{CCOOH}$ does not give $\mathrm{HVZ}$ reaction. Reason:…
Assertion: $\left(\mathrm{CH}_3\right)_3 \mathrm{CCOOH}$ does not give $\mathrm{HVZ}$ reaction.
Reason: $\left(\mathrm{CH}_3\right)_3 \mathrm{CCOOH}$ does not have $\alpha$-hydrogen atom.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Solution
- Assertion: \(\left(\mathrm{CH}_3\right)_3 \mathrm{CCOOH}\) does not give reaction.
- This statement is true. \(\left(\mathrm{CH}_3\right)_3 \mathrm{CCOOH}\), known as pivalic acid, is a highly sterically hindered compound, and under typical conditions, it does not undergo certain reactions like aldol condensation or other base-catalyzed reactions.
- Reason: \(\left(\mathrm{CH}_3\right)_3 \mathrm{CCOOH}\) does not have an \(\alpha\)-hydrogen atom.
- This statement is also true. In \(\left(\mathrm{CH}_3\right)_3 \mathrm{CCOOH}\), the central carbon atom (attached to the carboxyl group) is surrounded by three methyl groups. Since there is no hydrogen directly bonded to the carbon adjacent to the carboxyl group, it lacks an \(\alpha\)-hydrogen.
Explanation:
The reason correctly explains the assertion. Reactions such as aldol condensation or reactions requiring an enolate ion formation do not occur without \(\alpha\)-hydrogens. In \(\left(\mathrm{CH}_3\right)_3 \mathrm{CCOOH}\), the absence of an \(\alpha\)-hydrogen is the key reason for the lack of reaction.
Correct Answer:
(1) If both assertion and reason are true and reason is the correct explanation of assertion.