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Question

Considering the basic strength of amines in aqueous solution, which one has the smallest $p K_{b}$ value ?

A

$(C H_{3})_{3} N$

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B

$C_{6} H_{5} N H_{2}$

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C

$(C H_{3})_{2} N H$

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D

$C H_{3} N H_{2}$

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Solution

The correct option is C
$(C H_{3})_{2} N H$

Aliphatic amines are more basic than aromatic amines.

$(C H_{3})_{2} N H > C H_{3} N H_{2} > (C H_{3})_{3} N (a m o n g a l i p h a t i c a m i n e s i n w a t e r)$ .

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Similar questions

Considering the basic strength of amines in aqueous solution, which one has the smallest $p K_{b}$ value ?

Q. Considering the basic strength of amines in aqueous solutions, which one has the smallest

p K_{b}

Q. Among the following amines, which one has the highest

p K_{b}

value in aqueous solution?

Q. Arrange the following in the increasing order of their basic strength in aqueous solution:

C H_{3} N H_{2}, (C H_{3})_{3} N, (C H_{3})_{2} N H

Arrange the following in the decreasing order of their basic strength in aqueous solution:

$C H_{3} N H_{2}, (C H_{3})_{2} N H, (C H_{3})_{3} N$ and $N H_{3}$

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