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Depression in Freezing Point

1. Amongst th...

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1. Amongst the two which is most basic Aniline and p-nitroaniline?

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Q. Arrange the following in increasing order of their basic strength;
Aniline, p-nitroaniline, p-toulidine

Q. Which is more acidic p-nitroaniline or aniline

Q. Give reasons for the following:
(a) Acetylation of aniline reduces its activation effect.
(b)

C H_{3} N H_{2}

is more basic than

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

N H_{2}

is O/P directing group,
yet aniline on nitration gives a significant amount of m - nitroaniline.

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

p K_{b}

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

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

C H_{3} N H_{2}

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

Q. Nitration of aniline in strong acidic medium also gives m-nitroaniline because:

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