Question

p-amino azo benzene is obtained by treating diazonium chloride with:
A. Phenol
B. Benzoic acid
C. Alcohol
D. Aniline

Answer 1

The given product name is p-amino azo benzene. The structure of the p-amino azo benzene and the structure of diazonium chloride are as follows.

Complete step-by-step answer: - In the question it is given that to find the chemical name which is going to react with diazonium chloride to give p-amino azo benzene.
- First we should know the structure of the p-amino azo benzene and the structure of diazonium chloride.
- The structure of p-amino azo benzene and the structure of diazonium chloride are as follows.

- We have to find the chemical A in the below equation.

- Coming to the options, option A. The chemical is A. Phenol. If we will take we get p-hydroxy azobenzene as the product and the chemical reaction is as follows.

- Therefore we are not getting p-amino azo benzene if we will take A is phenol. So option A is wrong.
- Coming to option B, Benzoic acid. The chemical reaction is as follows.

- Therefore option B is also not correct because we didn’t get the product that we need.
- Coming to option C, Alcohol. The chemical reaction is as follows.

- Therefore the option C is also wrong.
- Coming to option D, Aniline. The chemical reaction is as follows.

Therefore the option D, aniline is correct.

Note: By using diazonium chloride we can prepare various types of products. For example by using diazonium chloride we can prepare p-amino azo benzene as the product. It is an azo dye useful for various purposes.