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Question:

In the following compounds, the decreasing order of basic strength will be:

(C2H5)2NH>NH3>C2H5NH

NH3>C2H5NH2>(C2H5)2N

(C2H5)2NH>C2H5NH2>NH

C2H5NH2>NH3>(C2H5)2N

Solution:

Correct option is A (C2H5)2NH>C2H5NH2>NH
Solution:- (A)(C2H5)2NH>C2H5NH2>NH
Basic strength order
(CH3CH2)2NH>CH3CH2NH2>NH2
0°amine
1°amine
Alkyl group shows +I effect, and hence increases basicity.