Question

What is the product in the reaction? $\mathrm{CH}{}_3\mathrm{MgBr}\underset{(\mathrm{ii}){\mathrm{H}}_2\mathrm{O}}{\overset{(\mathrm{i})\mathrm{C}{\mathrm{O}}_2}{\to }}\mathrm{X}$

• A. Acetaldehyde
• B. Acetic acid
• C. Formic acid
• D. Formaldehyde

Answer 1

Answer: (B)

Grignard reagent produce carboxylic acid on reaction with $C{O}_2$
$C{H}_{3}MgBr+C{O}_2⟶C{H}_{3}COOMgBr$
$\stackrel{\mathrm{H}{}_2\mathrm{O}}{\to }\mathrm{CH}{}_3\mathrm{COOH}+\mathrm{Mg}(\mathrm{OH})\mathrm{Br}$