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Question

Identify the weakest base among the following.

A
p-methoxyaniline
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B
o-toluidine
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C
benzene1,4diamine
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D
4aminobenzoic acid
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Solution

The correct option is A p-methoxyaniline
p-methoxyaniline is the weakest base amongst the following because, methoxy group (OCH3) being the electron donating group, donates electrons to the benzene ring thereby the increasing the concentration of electrons on the ring and thus the attack of nucleophilic becomes difficult.

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