Question

The correct order of acidic character in the above compounds is:

• A. a > b > c > d
• B. c > a > d > b
• C. b > c > a > d
• D. a > c > b > d

Answer 1

The correct option is A a > b > c > d

If the ion formed after removal of $H^{+}$ is more stable then the compound is said to be more acidic.

$\Rightarrow$ Alkyne is more stabilized with a carbanion due to its high electronegativity.

$\Rightarrow$ $Ph-{C{H}_2}^{-}$ is stable due to resonance.

$c>d$ because alkene carbanion is more stable than alkane carbanion.

Thus the correct order of acidic character is $a>b>c>d$