Arrange benzene, n-hexane and ethyne in decreasing order of acidic behaviour. Also give reason for this behaviour.

Open in App

Solution

Acidic character of a species is defined on the basis of ease with which it can lose its H–atoms.

The hybridization state of carbon in the given compound is:

As the s–character increases, the electronegativity of carbon increases and the electrons of C–H bond pair lie closer to the carbon atom. As a result, partial positive charge of H–atom increases and H⁺ ions are set free.

The s–character increases in the order:

sp³ < sp² < sp

Hence, the decreasing order of acidic behaviour is Ethyne > Benzene > Hexane.

Suggest Corrections

Similar questions

How would you convert the following compounds into benzene?
(i) Ethyne

(ii) Ethene

(iii) Hexane

Q. Arrange the following in the decreasing order of importance for the welfare of human society. Give a reason for your answer.

Biogas, Citric acid, Penicillin and Curd.

Q. Arrange the following amines in the decreasing order of their basic nature :

(a) Aniline, propane-1-amine and N-methyl ethanamine
(b) Benzene-1-diamine, ammonia and 4-aminobenzoic acid.
(c) N- Methylaniline, phenylmethylamine and N-Phenylaniline

Arrange the following in the decreasing order (most important first) of their importance, for the welfare of human society. Give reasons for your answer.

Biogas, Citric acid, Penicillin and Curd

Q. Arrange the following in the decreasing order (most important first) of their importance, for the welfare of human society. Give reasons for your answer. Biogas, Citric acid, Pencillin and Curd.

Join BYJU'S Learning Program