Question

Molecules of benzoic acid dimerises in benzene

Answer 1

Yes Benzoic acid dimerises in Benzene.

Explanation:

• We know that Benzoic acid has a -COOH group on Benzene.
• This -COOH group is carboxylic acid group, which has double bond oxygen to carbon(=O) has lone pair of electrons on it.
• The(-OH) will exhibit dipolar attractions on electron, partial positive charge on this Hygrogen as well as partial negative charge on this oxygen atom is observed.
• In the benzene medium, an attraction between Hydrogen of (-OH) of one benzoic acid molecule 0nd oxygen of (=O) of other Benzoic acid  is observed, this is Hydrogen bonding. this dimerises these two molecules.
• Therfore, the Benzoic acid molecules dimerises and exists as dimer in Benzene medium.