The correct order of increasing basic nature | vedclass

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Question

(C) The basicity of aliphatic amines in aqueous solution depends on the combined effect of inductive effect $(+I)$,solvation effect,and steric hindran

Vedclass · Accepted Answer

$NH_{3} < CH_{3}NH_{2} < (CH_{3})_{2}NH$

Vedclass · Answer

(C) The basicity of aliphatic amines in aqueous solution depends on the combined effect of inductive effect $(+I)$,solvation effect,and steric hindrance.Alkyl groups are electron-releasing ($+I$ effect),which increases the electron density on the nitrogen atom,thereby increasing basicity.However,in aqueous solutions,the stability of the conjugate acid (ammonium ion) formed by protonation is also crucial,which is influenced by hydrogen bonding (solvation) and steric hindrance.For the given amines,the order of basicity is $NH_{3} < CH_{3}NH_{2} < (CH_{3})_{2}NH$.

The correct order of increasing basic nature for the bases $NH_{3}$,$CH_{3}NH_{2}$ and $(CH_{3})_{2}NH$ in aqueous solutions is:

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