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

Arrange benzene, n-hexane and ethyne in decreasing order of acidic beh

1.	Arrange benzene, n-hexane and ethyne in decreasing order of acidic behaviour. Also give reason for this behaviour.
Answer» Solution :Acidic character of a species is define 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 increase, the electro-negativity of carbon increases and the electron of C-H bond pair lie closer to the carbon atom. As a result, partial positive charge of H-atom incresaes and H ions are set free. The s-character increases in the order : `SP^(3) lt sp^(2) lt sp` hence, the decreasing order of acidic behaviour is : ETHYNE `GT` BENZENE `gt` Hexane.