A) \[C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{3}}N>{{(C{{H}_{3}})}_{2}}NH\]
B) \[{{(C{{H}_{3}})}_{2}}NH>C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{3}}N\]
C) \[C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{2}}NH>{{(C{{H}_{3}})}_{3}}N\]
D) \[{{(C{{H}_{3}})}_{3}}N>C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{2}}NH\]
Correct Answer: B
Solution :
\[\underset{{{K}_{b}}=}{\mathop{{}}}\,\underset{5.4\times {{10}^{-4}}}{\mathop{{{(C{{H}_{3}})}_{2}}NH}}\,>\underset{4.5\times {{10}^{-4}}}{\mathop{C{{H}_{3}}N{{H}_{2}}}}\,>\underset{0.6\times {{10}^{-4}}}{\mathop{{{(C{{H}_{3}})}_{3}}N}}\,\]
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