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  • Among the following four compounds: a. Phenol b. Methyl phenol <p style="margin-left:0

Among the following four compounds:

a. Phenol

b. Methyl phenol

c. Meta-nitrophenol

d. Para-nitrophenol

The acidity order is:

Option: 1

d > c > a > b


Option: 2

c > d > a > b


Option: 3

a > d > c > b


Option: 4

b > a > c > d


Answers (1)

best_answer

In phenols, the presence of electron releasing groups decreases the acidity, whereas the presence of electron withdrawing groups increases the acidity, compared to phenol. Among the meta and para-nitrophenols, the latter is more acidic as the presence of \mathrm{-NO_{2}}, group at para position stabilises the phenoxide ion to a greater extent than when it is present at meta position. Thus, correct order of acidity is : 

               

Posted by

Suraj Bhandari

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