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Give the decreasing order of K(a) value...

Give the decreasing order of `K_(a)` value of the following compounds.

A

`(I) gt (IV) gt (III) gt (II)`

B

`(II) gt (III) gt (IV) gt (I)`

C

`(I) gt (III) gt (II) gt (IV)`

D

`(I) gt (IV) gt (II) gt (IIII)`

Text Solution

Verified by Experts

The correct Answer is:
`a`

Thereofre, the order of acididc character:
Aromatic gt Non-aromaic gt Anti-aromatic.
But anti-aromati of `(III)` is more than `(II)` since `(III)` is more resonace stablised thatn `(II)`
Therefore, the order of decreasing acidic character of `K_(a)` value is `(I) gt (IV) gt (III) gt (II)`.
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