List of top Chemistry Questions on Carboxylic Acids asked in CBSE CLASS XII

Arrange the following compounds in increasing order of their acidic strengths : \[ CH_3CH(Br)CH_2COOH,\qquad CH_3CH(CH_3)COOH,\qquad CH_3CH_2CH(Br)COOH \]

How do you convert Benzoic acid to Benzene ?

Give a simple chemical test to distinguish between benzoic acid and ethyl benzoate.

Give reason for the following:

Carboxylic acids have higher boiling point than alcohols of comparable molecular masses.

Which is the correct order of acid strength from the following?

Which one of the given compounds is a stronger acid and why?
CH$_2$FCH$_2$COOH or CH$_3$CHFCH$_2$COOH

Assertion (A): Benzoic acid does not undergo Friedel – Crafts reaction.
Reason (R): Carboxyl group is deactivating and the catalyst aluminium chloride gets bonded to the carboxyl group.

Write the structures of A and B in the following reaction: \[ \text{C}_6\text{H}_5\text{COOH} \xrightarrow{\text{NH}_3, \Delta} A \xrightarrow{\text{Br}_2/\text{NaOH}} B \]

Complete the following reaction: \[ \text{C}_6\text{H}_5\text{N}_2^+Cl^- \xrightarrow{\text{(i) HBF}_4} \xrightarrow{\text{(ii) NaNO}_2/\text{Cu}, \Delta} \quad ? \]

Assertion (A): The pK$_a$ of O$_2$N–CH$_2$–COOH is lower than that of CH$_3$–COOH. Reason (R): The –NO$_2$ group shows an electron-withdrawing effect, which increases the acidic character of O$_2$N–CH$_2$–COOH.