Question

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

Answer 1

Ethyne is sp (50% s+ 50% p) hybridized while benzene and n-hexane are sp2 (33.3% s + 66.6% p) and sp3 (25% s + 75% p) hybridized respectively.

More the s character, more acidic is that compound.

 

Thus the acidity follows the order

Ethyne > benzene>n-hexane

 

 

Hope it helps.

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