Question
Arrange benzene, n-hexane and ethyne in decreasing order of acidic behaviour. Also give a reason for this behaviour.
Solution
The decreasing order of acidic strength:
Hydrocarbon: Ethyne > Benzene > n-Hexane
Hybridization of C-atoms: (sp) (sp2) (sp3)
The acidic character is linked with the percentage of s-character. Greater the s-character, more is the electronegativity of the carbon atom and more will be the acidic character.
Hydrocarbon: Ethyne > Benzene > n-Hexane
Hybridization of C-atoms: (sp) (sp2) (sp3)
The acidic character is linked with the percentage of s-character. Greater the s-character, more is the electronegativity of the carbon atom and more will be the acidic character.
