Question

The strongest acid amongst the following compounds is :

A. $$C{H_3}COOH$$
B. $$HCOOH$$
C. $$C{H_3}C{H_2}CH\left( {Cl} \right)C{O_2}H$$  
D. $$ClC{H_2}C{H_2}COOH$$
Answer :   $$C{H_3}C{H_2}CH\left( {Cl} \right)C{O_2}H$$
Solution :
The electron withdrawing $$\left( { - I} \right)$$  group $$ - Cl$$  withdraws electrons from $$O - H$$  bond and thus helps the cleavage of the $$O - H$$  bond releasing hydrogen as $${H^ + }.$$

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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