A) \[{{\operatorname{H}}_{2}}{{C}_{6}}{{H}_{5}}CN{{H}_{2}}\]
B) \[{{\operatorname{C}}_{6}}{{H}_{5}}C{{H}_{2}}NHC{{H}_{3}}\]
C) \[{{\operatorname{O}}_{2}}N-C{{H}_{2}}N{{H}_{2}}\]
D) \[{{\operatorname{CH}}_{3}}NHCHO\]
Correct Answer: D
Solution :
Amides are weaker bases than amines. As Basicity order is as follows: \[(CH3),NH>{{C}_{3}},N{{H}_{2}}>{{(C{{H}_{3}})}_{3}}\ N>N{{H}_{3}}:\] \[\left( C{{H}_{3}}C{{H}_{2}} \right),\text{ }NH>{{(C{{H}_{3}}C{{H}_{2}})}_{3}}N>C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}\] \[>N{{H}_{3}}\] Basicity of an amine in aqueous solution primarily depends upon stability of ammonium cation.
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