1. Tardigrade
  2. Question
  3. Chemistry
  4. Base strength of (i) H 3 C overset ominus C H 2 (ii) H 2 C = overset ominus CH (iii) H - C ≡ C ominus is in the order of

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Base strength of
(i) $H _{3} C\overset{{\ominus} }{C} H _{2}$
(ii) $H _{2} C =\overset{\ominus}{ C}H $
(iii) $H - C \equiv C ^{\ominus}$
is in the order of

AIPMTAIPMT 2008Organic Chemistry – Some Basic Principles and Techniques

Solution:

Weaker the acid, strongest is its conjugate base. Among alkane, alkene and alkyne, alkynes are most acidic and alkanes are least acidic, so the order of base strength is
alkane $>$ alkene $>$ alkyne or
$CH _{3} \overset{\ominus}{C}H_{2}> H _{2} C =\overset{\ominus}{ C } H > H - C \equiv \overset{\ominus}{ C }$