Read and download free pdf of CBSE Class 12 Chemistry Amines Assignment. Get printable school Assignments for Class 12 Chemistry. Class 12 students should practise questions and answers given here for Unit 13 Amines Chemistry in Class 12 which will help them to strengthen their understanding of all important topics. Students should also download free pdf of Printable Worksheets for Class 12 Chemistry prepared as per the latest books and syllabus issued by NCERT, CBSE, KVS and do problems daily to score better marks in tests and examinations
Assignment for Class 12 Chemistry Unit 13 Amines
Class 12 Chemistry students should refer to the following printable assignment in Pdf for Unit 13 Amines in Class 12. This test paper with questions and answers for Class 12 Chemistry will be very useful for exams and help you to score good marks
Unit 13 Amines Class 12 Chemistry Assignment
a) In decreasing order of the pKb values:
Ans: C6H5NH2>C6H5NHCH+>C2H5NH2>(C2H5)2NH
b) In increasing order of basic strength:
C6H5NH2, C6H5N(CH3)2, (C2H5)2NH and CH3NH2
Ans: C6H5NH2<C6H5N(CH3)2< CH3NH2<(C2H5)2NH
c) In increasing order of basic strength:
a) Aniline, p-nitroniline and p-toluidine
b) C6H5NH2 , C6H5NHCH3, C6H5CH2NH2
Ans: a)p-nitroaniline<aniline<p-toluidine
b)C6H5NH2<C6H5NHCH3<C6H5CH2NH2
d) In decreasing order of basic strength in gas phase:
C2H5NH2, (C2H5)2NH, (C2H5)3N and NH3
Ans: (C2H5)3N>(C2H5)2NH> C2H5NH2> NH3
e) In increasing order of boiling point:
C2H5OH, (CH3)2NH, C2H5NH2
Ans: (CH3)2NH< C2H5NH2< C2H5OH
f) In increasing order of solubility in water:
C6H5NH2, (C2H5)2NH, C2H5NH2
Ans: C6H5NH2<(C2H5)2NH< C2H5NH2
4) Write short notes on the following:
i) Carbylamine reaction :All primary amines on heating with chloroform and an alcoholic solution of potassium hydroxide produce isocyanide
ii)Diazotisation:The conversion of aniline or other aromatic primary amines into diazonium salts by the action of nitrous acid and dilute hydrochloric acid is called diazotization.
iii)Hofmann’s bromamide reaction :The heating of amine an amide with bromine and caustic alkali to yield an amine with one carbon less than the original amide this reaction is called Hofmann’s bromamide reaction.
iv)Coupling reaction:Reaction of aromatic diazinium salt with phenols and amines to give azo compounds is called coupling reaction.
v)Ammonolysis :Alkyl halides react with alcoholic ammonia to primary,secondary and tertiary amines along with some quaternary ammonium salts.
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CBSE Class 12 Chemistry Unit 13 Amines Assignment
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Assignment for Chemistry CBSE Class 12 Unit 13 Amines
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Unit 13 Amines Assignment Chemistry CBSE Class 12
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Unit 13 Amines Assignment CBSE Class 12 Chemistry
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CBSE Chemistry Class 12 Unit 13 Amines Assignment
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