Which one of the following is the weakest base?

Triethylamine

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Diethylamine

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Ethylamine

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Ammonia

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Solution

The correct option is A Triethylamine
This is due to steric crowding which makes the approach and bonding by a proton more difficult i.e. the path is blocked due to the presence of three methyl groups. This decreases its basicity. Therefore, dimethylamine is a stronger base than triethylamine.

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Which one of the following is the weakest acid?

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