Match the K a values :
Compounds | Ka | ||
(a) | Benzoic acid | (i) | 3.3 × 10–5 |
(b) | (ii) | 6.3 × 10–5 | |
(d) | (iii) | 30.6 × 10–5 | |
(e) | (iv) | 6.4 × 10–5 | |
(f) | (v) | 4.2 × 10–5 |
Text Solution
Verified by ExpertsCHECK THE SOLUTION.
– (ii) – (iii)
– (iv) – (i) (e) – (v)
Sol. As we know that acid strength of acid ∝ K a . So higher the value of K a , higher the acidic strength of acid.
Strength of acid ∝ Rate of formation of proton or stability of conjugate base.
In carboxylic acid, acidic character is due to resonance stabilization of their carboxylate ion, like in benzoic acid.
C 6 H 5 —C 
C 6 H 5 —C 
I II
So, acidic strength order of the following acid is :
O 2 N 
COOH > Cl 
COOH > 
COOH>H 3 C 
COOH >
(– I , –m) (– I )
H 3 CO 
COOH
(+m)
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems