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Question

Which one of the following is the weakest base ?

A
Triethylamine
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B
Diethylamine
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C
Ethylamine
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D
Ammonia
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Solution

The correct option is A Triethylamine
Alkyl group (an electron releasing (+I) group) increases electron density at N-atom, hence, basic nature is increased.
In ammonia, no alkyl group is present, so it is least basic.

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