The correct order of acidic nature of the following alkynes is
I. $C_{2} H_{2}$ II. $(CH_{3})_{2} C_{2}$ III. $(CH_{3}) C_{2} H$

Question

The correct order of acidic nature of the following alkynes is I. C_2H_2 II. ( CH_3 )_2C_2 III. ( CH_3 )C_2H

Accepted Answer

Correct answer: B. (b) HC ≡ CH H_3C-C ≡C- CH_3 CH_3-C ≡C-H (I) (II) (III) Due to the (+R ) effect of methyl group the stability of conjugate bases decreases from (III) to (II): ∴ Correct order of acidity : (II) < (III) < (I)

$The correct order of acidic nature of the following alkynes is I. C_{2} H_{2} II. (CH_{3})_{2} C_{2} III. (CH_{3}) C_{2} H$

Solution

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