Question

Assertion :The aqueous solution of $C{H}_{3}COONa$ is alkaline in nature. Reason: Acetate ion undergoes anionic hydrolysis.

• A. Both Assertion and Reason are true and Reason is the correct explanation for Assertion.
• B. Both Assertion and Reason are true, but Reason is not the correct explanation for Assertion.
• C. Assertion is true, but Reason is not true.
• D. Assertion is not true, but Reason is true.

Answer 1

The correct option is A Both Assertion and Reason are true and Reason is the correct explanation for Assertion.

$C{H}_{3}COONa+H_{2}O\to C{H}_{3}COOH+NaOHC{H}_{3}COONa+H_{2}O\to C{H}_{3}COOH+NaOH$
The above process takes place in following steps
${CH}_{3}COONa\begin{array}{c}\underrightarrow{Ionisation}\\ inaqueoussolution\end{array}\begin{array}{c}C{H}_{3}CO{O}^{-}\\ strongbase\end{array}+{Na}^{+}$
$C{H}_{3}CO{O}^{-}+H_{2}O\to {CH}_{3}COOH+O{H}^{-}$
Acetate ion undergoes hydrolysis and the resulting solution is slightly basic due to excess of ${OH}^{-}$ ions. Hence, both (A) and (R) are true and (R) is the correct explanation of (A).