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arrange benzene n hexane and ethyne in decreasing...

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

Answer:

Acidic character of 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 atom 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

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

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

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

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