The correct increasing order of acidity of the following alkynes (1) CH 3- C ≡ C - CH 3 (2) CH 3- C ≡ CH (3) CH ≡ CH

Question

The correct increasing order of acidity of the following alkynes (1) CH 3- C ≡ C - CH 3 (2) CH 3- C ≡ CH (3) CH ≡ CH (A) 1<2<3 (B) 2<3<1 (C) 3<2<1 (D) 1<3<2

Tardigrade Admin · Accepted Answer

Only terminal alkynes show acidic nature. Ethyne is more acidic than propyne. But-2-yne is not acidic as it does not contain any hydrogen attached to s p hybridised carbon.

Q. The correct increasing order of acidity of the following alkynes
(1) $C H_{3} - C \equiv C - C H_{3}$
(2) $C H_{3} - C \equiv C H$
(3) $C H \equiv C H$

$1 < 2 < 3$

$2 < 3 < 1$

$3 < 2 < 1$

$1 < 3 < 2$

Only terminal alkynes show acidic nature. Ethyne is more acidic than propyne. But- $2$ -yne is not acidic as it does not contain any hydrogen attached to $s p$ hybridised carbon.

Q. The correct increasing order of acidity of the following alkynes (1) CH3​−C≡C−CH3​ (2) CH3​−C≡CH (3) CH≡CH

1<2<3

2<3<1

3<2<1

1<3<2