Question

describe any two methods of preparation of benzene

Answer 1

Preparation of benzene by the following ways :-
1- By the decarboxylation of sodium benzoate.
2- By heating phenol with zinc.
3- By the polymerization of ethyne.

Answer 2

Answer:

Preparation method for benzene  are as follows - .

Preparation method for benzene  are as follows - .1. Ethyne cyclic polymerisation

Preparation method for benzene  are as follows - .1. Ethyne cyclic polymerisation2. Aromatic acid decarboxylation

Preparation method for benzene  are as follows - .1. Ethyne cyclic polymerisation2. Aromatic acid decarboxylation 3. Phenol reduction

Explanation:

Explanation:1) Ethyne Cyclic Polymerization -

• After passing through a red hot iron tube at 873 K, ethyne undergoes cyclic polymerization and generates benzene.

After passing through a red hot iron tube at 873 K, ethyne undergoes cyclic polymerization and generates benzene.2) Phenol reduction -

• The vapour of phenol is transformed to benzene by passing it through heated zinc dust.