Alcohols Phenols And Ethers Question 120
Question: Arrange the following in increasing order of their acidity- [a] o-cresol, [b] salicylic acid, [c] phenol
Options:
A) $ c \lt a \lt b $
B) $ b \lt c \lt a $
C) $ a \lt b \lt a $
D) $ a \lt c \lt b $
Show Answer
Answer:
Correct Answer: D
Solution:
[d] Electron releasing groups $ (-CH_3,-OCH_3,-NCH_3etc) $ intensify the negative charge of phenoxide ion, i.e., destablises it hence decreases ionization of parent phenol, therefore decreases acidity. While electron withdrawing groups $ ( -NO_2\text{,}-COOH,-CHOetc. ) $ increases acidity.
BETA
