The correct order of (pK \_{ a }) values for the following c... | Chemistry | SolveeIt | Solveeit

Today, August 18

Question

The correct order of $pK _{ a }$ values for the following compounds is:

A

$a>b>c>d$

B

$b > a > d > c$

C

$b > d > a > c$

D

$c > a > d > b$

Answer

$c > a > d > b$

Explanation

Solution

Due to −M effect of −NO2 group, it increases acidity +M effect of N(CH3)2 decreases acidity.
Hyperconjugation of isopropyl decrease acidity
∴ order of acidic strength
(c) > (a) > (d) > (b)