question_answer

Assign number 1 for least to 4 for most to indicate the relative base strength of the following:

(I) \[{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]

(II) \[p-N{{O}_{2}}{{C}_{6}}{{H}_{4}}N{{H}_{2}}\]

(III) \[m-N{{O}_{2}}{{C}_{6}}{{H}_{4}}N{{H}_{2}}\]

(IV) \[p-C{{H}_{3}}O{{C}_{6}}{{H}_{4}}N{{H}_{2}}\]

 

A) I - 3     II - 1     III - 2    IV - 4

B)  I - 1     II - 2     III - 3    IV - 4

C)  I - 2     II - 3     III - 4    IV - 1

D)  I - 4     II - 1     III - 3    IV - 2

Correct Answer: A

Solution :

[a] EWG decreases basic strength EDG increases basic strength