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Amines — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryAmines1 Mark
Question
Which one of the following is the weakest base?
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Answer

The $+I$ effect increases with increase in the alkyl group.
Therefore the basic strength will be the highest in $\ce{(C_2​H_5​)_3N}$ and least in $\ce{NH_3}$​.
Therefore the decreasing order of basic strength in gas phase will be $\ce{(C_2​H_5​)_3N > (C_2​H_5​)_2NH > C_2​H_5​NH_2 ​> NH_3}$​.

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