Question

Increasing order of acid strength among p-methoxyphenol, p-methylphenol and p-nitrophenol is

(a) p-nitrophenol, p-methox-vphenol, p-methylphenol

(b) p-methyiphenol, p-methoxlphenol, p-nitrophenol

(c) p-nitrophenol, p-methylphenol, p-methoxyphenol

(d) p-methoxyphenol, p-methylphenol, p-nitrophenol

Answer 1

Correct option (d) p-methoxyphenol, p-methylphenol, p-nitrophenol

Explanation :

- OCH₃, -CH₃ are electron donating groups decreases the acidic character of phenols. NO₂, -CN are electron withdrawing groups, tend to increase the acidic character. Thus, the order is p-methoxphenol < p-methylphenol < p-nitrophenol.