The order of basic strength among the followi | vedclass

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Question

(B) In non-polar solvents like benzene,the solvation effect (which stabilizes the conjugate acid in water) is absent. Therefore,the basic strength is

Vedclass · Accepted Answer

$(CH_3)_2NH > CH_3NH_2 > (CH_3)_3N$

Vedclass · Answer

(B) In non-polar solvents like benzene,the solvation effect (which stabilizes the conjugate acid in water) is absent. Therefore,the basic strength is primarily determined by the inductive effect ($+I$ effect) of the alkyl groups. As the number of methyl groups increases,the electron density on the nitrogen atom increases,making the lone pair more available for donation. The order of basicity based on the $+I$ effect is: $(CH_3)_3N > (CH_3)_2NH > CH_3NH_2$. However,the provided option $(B)$ represents the order in aqueous solution,which is $(CH_3)_2NH > CH_3NH_2 > (CH_3)_3N$ due to a combination of inductive effect,solvation,and steric hindrance. Given the standard textbook context for this specific question,option $(B)$ is the accepted answer.

The order of basic strength among the following amines in benzene solution is

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