CH_3 MgBr+CO_2 stackrel Dry ether longrightarrow Y stackrelH_3 O^⊕longrightarrow Z Identify Z from the following.

Correct answer: (B) Acetic acid. When Grignard's reagent is treated with CO_2 , a magnesium complex is formed, which on further hydrolysis yields monocarboxylic acid.

Q2 / 160 · TS EAMCET 2014 · Chemistry

$$ \mathrm{CH}_3 \mathrm{MgBr}+\mathrm{CO}_2 \stackrel{\text { Dry ether }}{\longrightarrow} Y \stackrel{\mathrm{H}_3 \mathrm{O}^{\oplus}}{\longrightarrow} Z $$ Identify $Z$ from the following.

A
Ethyl acetate
Correct answer
B
Acetic acid
C
Propanoic acid
D
Methyl acetate

Solution

When Grignard's reagent is treated with $\mathrm{CO}_2$, a magnesium complex is formed, which on further hydrolysis yields monocarboxylic acid.

Hence, the correct answer is option: 'B'.

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