Arrange the following as directed: (a) Increasing order of basic strength: Aniline, p – nitroaniline and p – toluidine. (b) Decreasing order of basic strength in gas phase: C2H5NH2, (C2H5)2NH, (C2H5)3N and NH3. (c) Increasing order of solubility in water: C6H5NH2, (C2H5)2NH, C2H5NH2.

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Arrange the following:

(i) In the decreasing order of the $p K_{b}$ values
$C_{2} H_{5} N H_{2}, C_{6} H_{5} N H C H_{3}, (C_{2} H_{5})_{2} N H$ and $C_{6} H_{5} N H_{2}$

(ii) In increasing order of basic strength:
$C_{6} H_{5} N H_{2}, C_{6} H_{5} N (C H_{3})_{2}, (C_{6} H_{5})_{2} N H a n d C H_{3} N H_{2}$

(iii) In increasing order of basic strength:
(a) Aniline, p-nitroaniline and p-toluidine
(b) $C_{6} H_{5} N H_{2}, C_{6} H_{5} N H C H_{3}, C_{6} H_{5} C H_{2} N H_{2}$

(iv) In decreasing order of basic strength in gas phase :

$C_{2} H_{5} N H_{2}, (C_{2} H_{5})_{2} N H, (C_{2} H_{5})_{3} N a n d N H_{3}$

(v) In increasing order of boiling point:

$C_{2} H_{5} O H, (C H_{3})_{2} N H, C_{2} H_{5} N H_{2} .$

(vi) In increasing order of solubility in water :

$C_{6} H_{5} N H_{2}, (C_{2} H_{5})_{2} N H, C_{2} H_{5} N H_{2} .$

Q. Arrange the following
(i) In decreasing order of the

p K_{b}

values:

C_{2} H_{5} N H_{2}, C_{6} H_{5} N H C H_{3}, (C_{2} H_{5})_{2} N H

and

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

(ii) In increasing order of basic strength:

C_{6} H_{5} N H_{2}, C_{6} H_{5} N (C H_{3})_{2}, (C_{2} H_{5})_{2} N H

and

C H_{3} N H_{2}

(iii) In increasing order of basic strength:
(a) Aniline, p-nitroaniline and p-toluidine

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

C_{2} H_{5} N H_{2}, (C_{2} H_{5})_{2} N H, (C_{2} H_{5})_{3} N, C_{6} H_{5} N H_{2}

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

C_{2} H_{5} N H_{2}, C_{6} H_{5} N H_{2}, N H_{3}, C_{6} H_{5} C H_{2} N H_{2}

and

(C_{2} H_{5})_{2} N H

Q. Arrange the following in decreasing order of their basic strength:

C_{6} H_{5} N H_{2}, C_{2} H_{5} N H_{2}, (C_{2} H_{5})_{2} N H, N H_{3}

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