A) \[I>II>III>IV\]
B) \[II>I>III>IV\]
C) \[III>I>II>IV\]
D) \[IV>I>II>III\]
Correct Answer: B
Solution :
Basicity of amines increases with increasing \[+I\] effect of alkyl groups.\[3{}^\circ \]amine has greater \[+I\] effect than \[2{}^\circ \] and \[1{}^\circ \] amines but less basic than these, due to steric hinderance of bulky groups. Moreover, benzyl amine is a weaker base than aliphatic amines. Hence the following compounds has the order of basicity\[\underset{I}{\mathop{C{{H}_{3}}}}\,N{{H}_{2}}(1{}^\circ ),\,\,\underset{II}{\mathop{{{(C{{H}_{3}})}_{2}}}}\,NH(2{}^\circ ),\] \[(CH\underset{III}{\mathop{_{3}{{)}_{3}}}}\,N(3{}^\circ ),\,\,{{C}_{6}}{{H}_{5}}\underset{IV}{\mathop{C{{H}_{2}}}}\,N{{H}_{2}}\] \[II>I>III>IV\]You need to login to perform this action.
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