Question

In a set of the given reactions, acetic acid yielded a product $$C.$$
$$C{H_3}COOH + PC{l_5} \to $$     \[A\xrightarrow[\text{ Anhy}.\,AlC{{l}_{3}}]{{{C}_{6}}{{H}_{6}}}B\xrightarrow[\text{ether}]{{{C}_{2}}{{H}_{5}}MgBr}C\]
Product $$C$$ would be

A. $$C{H_3}CH\left( {OH} \right){C_2}{H_5}$$
B. $$C{H_3}CO{C_6}{H_5}$$
C. $$C{H_3}CH\left( {OH} \right){C_6}{H_5}$$
D. \[\overset{\begin{smallmatrix} {{C}_{2}}{{H}_{5}}\, \\ |\,\,\,\,\,\,\,\,\, \end{smallmatrix}}{\mathop{C{{H}_{3}}-C\left( OH \right){{C}_{6}}{{H}_{5}}}}\,\]  
Answer :   \[\overset{\begin{smallmatrix} {{C}_{2}}{{H}_{5}}\, \\ |\,\,\,\,\,\,\,\,\, \end{smallmatrix}}{\mathop{C{{H}_{3}}-C\left( OH \right){{C}_{6}}{{H}_{5}}}}\,\]
Solution :
\[C{{H}_{3}}COOH+PC{{l}_{5}}\to \underset{\left( A \right)}{\mathop{C{{H}_{3}}COCl}}\,\]       \[\xrightarrow[\text{anhy}\text{.}\,AlC{{l}_{3}}]{{{C}_{6}}{{H}_{6}}}\]
\[\underset{\left( B \right)}{\mathop{{{C}_{6}}{{H}_{5}}COC{{H}_{3}}}}\,\xrightarrow[\text{ether}]{{{C}_{2}}{{H}_{5}}MgBr}\]      \[\underset{\left( C \right)}{\mathop{\underset{\begin{smallmatrix} |\,\,\,\,\,\,\, \\ OH\,\,\,\, \end{smallmatrix}}{\overset{\begin{smallmatrix} \,\,{{C}_{2}}{{H}_{5}} \\ |\,\,\,\,\, \end{smallmatrix}}{\mathop{{{C}_{6}}{{H}_{5}}C-C{{H}_{3}}}}}\,}}\,\]

Releted MCQ Question on
Organic Chemistry >> Carboxylic Acid

Releted Question 1

When acetaldehyde is heated with Fehling’s solution it gives a precipitate of

A. $$Cu$$
B. $$CuO$$
C. $$C{u_2}O$$
D. $$Cu + C{u_2}O + CuO$$
Releted Question 2

In the Cannizzaro reaction given below,
\[2PhCHO\xrightarrow{^{-}OH}PhC{{H}_{2}}OH+PhCO_{2}^{-},\]
the slowest step is

A. the attack of $$^ - OH$$  at the carbonyl group,
B. the transfer of hydride to the carbonyl group,
C. the abstraction of proton from the carboxylic acid,
D. the deprotonation of $$PhC{H_2}OH.$$
Releted Question 3

When propionic acid is treated with aqueous sodium bicarbonate, $$C{O_2}$$  is liberated. The $$'C'$$ of $$C{O_2}$$  comes from

A. methyl group
B. carboxylic acid group
C. methylene group
D. bicarbonate
Releted Question 4

Benzoyl chloride is prepared from benzoic acid by

A. $$C{l_2},hv$$
B. $$S{O_2}C{l_2}$$
C. $$SOC{l_2}$$
D. $$C{l_2},{H_2}O$$

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Carboxylic Acid


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