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![NCERT solutions for Chemistry Part 1 and 2 [English] Class 12 chapter 9 - Amines - Shaalaa.com](/images/chemistry-part-1-and-2-english-class-12_6:90eff1d69b394e9686aeca8e3559f16e.jpg "NCERT solutions for Chemistry Part 1 and 2 [English] Class 12 chapter 9 - Amines")
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Solutions for Chapter 9: Amines
Below listed, you can find solutions for Chapter 9 of CBSE, Karnataka Board PUC NCERT for Chemistry Part 1 and 2 [English] Class 12.
NCERT solutions for Chemistry Part 1 and 2 [English] Class 12 9 Amines Intext Questions [Pages 262 - 277]
Classify the following amine as primary, secondary or tertiary:
Primary
Secondary
Tertiary
Classify the following amine as primary, secondary or tertiary:
Primary
Secondary
Tertiary
Classify the following amine as primary, secondary or tertiary:
(C2H5)2CHNH2
Primary
Secondary
Tertiary
Classify the following amine as primary, secondary or tertiary:
(C2H5)2NH
Primary
Secondary
Tertiary
- Write structures of different isomeric amines corresponding to the molecular formula C4H11N.
- Write the IUPAC names of all the isomers.
- What type of isomerism is exhibited by different pairs of amines?
How will you convert Benzene into aniline?
How will you convert Benzene into N, N-dimethylaniline?
How will you convert Cl−(CH2)4−Cl into hexan-1, 6-diamine?
Arrange the following in increasing order of their basic strength:
C2H5NH2, C6H5NH2, NH3, C6H5CH2NH2 and (C2H5)2NH
Arrange the following in increasing order of their basic strength:
C2H5NH2, (C2H5)2NH, (C2H5)3N, C6H5NH2
Arrange the following in increasing order of their basic strength:
CH3NH2, (CH3)2NH, (CH3)3N, C6H5NH2, C6H5CH2NH2
Complete the following acid-base reaction and name the product:
\[\ce{CH3CH2CH2NH2 + HCl ->}\]
Complete the following acid-base reaction and name the product:
\[\ce{(C2H5)3N + HCl ->}\]
Write reactions of the final alkylation product of aniline with excess of methyl iodide in the presence of sodium carbonate solution.
Write chemical reaction of aniline with benzoyl chloride and write the name of the product obtained.
Write structures of different isomers corresponding to the molecular formula C3H9N. Write the IUPAC names of the isomers which will liberate nitrogen gas on treatment with nitrous acid.
Convert 3-Methylaniline into 3-nitrotoluene.
Convert aniline into 1, 3, 5-tribromobenzene.
NCERT solutions for Chemistry Part 1 and 2 [English] Class 12 9 Amines Exercises [Pages 278 - 280]
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
(CH3)2CHNH2
Primary
Secondary
Tertiary
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
CH3(CH2)2NH2
Primary
Secondary
Tertiary
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
CH3NHCH(CH3)2
Primary
Secondary
Tertiary
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
(CH3)3CNH2
Primary
Secondary
Tertiary
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
C6H5NHCH3
Primary
Secondary
Tertiary
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
(CH3CH2)2NCH3
Primary
Secondary
Tertiary
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
m−BrC6H4NH2
Primary
Secondary
Tertiary
Give one chemical test to distinguish between the following pair of compounds.
Methylamine and dimethylamine
Give one chemical test to distinguish between the following pair of compounds.
Secondary and tertiary amines
Give one chemical test to distinguish between the following pair of compounds.
Ethylamine and aniline
Give one chemical test to distinguish between the following pair of compounds.
Aniline and benzylamine
Give one chemical test to distinguish between the following pair of compounds.
Aniline and N-methylaniline
Account for the following:
pKb of aniline is more than that of methylamine.
Account for the following:
Ethylamine is soluble in water, whereas aniline is not.
Account for the following:
Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.
Account for the following:
Although the amino group is o, p-directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline.
Give reasons for the following:
Aniline does not undergo Friedel- Crafts reaction.
Account for the following:
Diazonium salts of aromatic amines are more stable than those of aliphatic amines.
Account for the following:
Gabriel phthalimide synthesis is preferred for synthesising primary amines.
Arrange the following:
In decreasing order of the pKb values:
C2H5NH2, C6H5NHCH3, (C2H5)2NH and C6H5NH2
Arrange the following:
In increasing order of basic strength:
C6H5NH2, C6H5N(CH3)2, (C2H5)2NH and CH3NH2
Arrange the following:
In increasing order of basic strength:
Aniline, p-nitroaniline and p-toluidine
Arrange the following:
In increasing order of basic strength:
C6H5NH2, C6H5NHCH3, C6H5CH2NH2
Arrange the following:
In decreasing order of basic strength in the gas phase:
C2H5NH2, (C2H5)2NH, (C2H5)3N and NH3
Arrange the following:
In increasing order of boiling point:
C2H5OH, (CH3)2NH, C2H5NH2
Arrange the following:
In increasing order of solubility in water:
C6H5NH2, (C2H5)2NH, C2H5NH2
How will you convert ethanoic acid into methanamine?
How will you convert hexanenitrile into 1-aminopentane?
How will you convert methanol to ethanoic acid?
How will you convert ethanamine into methanamine?
How will you convert ethanoic acid into propanoic acid?
How will you convert methanamine into ethanamine?
How will you convert nitromethane into dimethylamine?
How will you convert propanoic acid into ethanoic acid?
Describe a method for the identification of primary, secondary and tertiary amines. Also write chemical equations of the reactions involved.
Write a short note on the following:
Carbylamine reaction
Write a short note on diazotisation.
Write a short note on the following:
Hoffmann’s bromamide reaction
Write a short note on the following:
Coupling reaction
Write a short note on ammonolysis.
Write short notes on acetylation.
Write a short note on the following:
Gabriel phthalimide synthesis
Accomplish the following conversion:
Nitrobenzene to benzoic acid
Accomplish the following conversion:
Benzene to m-bromophenol
Accomplish the following conversion:
Benzoic acid to aniline
Accomplish the following conversion:
Aniline to 2, 4, 6-tribromofluorobenzene
Accomplish the following conversion:
Benzyl chloride to 2-phenylethanamine
Accomplish the following conversion:
Chlorobenzene to p-chloroaniline
Accomplish the following conversion:
Aniline to p-bromoaniline
Accomplish the following conversion:
Benzamide to toluene
Accomplish the following conversion:
Aniline to benzyl alcohol
Give the structure of A, B and C in the following reaction:
\[\ce{CH3CH2I ->[NaCN] A ->[OH-][Partial hydrolysis] B ->[NaOH + Br2] C}\]
Give the structure of A, B and C in the following reaction:
\[\ce{C6H5N2Cl ->[CuCN] A ->[H2O/H+] B ->[NH3][\Delta] C}\]
Give the structure of A, B and C in the following reaction:
\[\ce{CH3CH2Br ->[KCN] A ->[LiAlH4] B ->[HNO2][0^\circ C] C}\]
Give the structure of A, B and C in the following reaction:
\[\ce{C6H5NO2 ->[Fe/HCl] A ->[NaNO2 + HCl][273 K] B ->[H2O/H+][\Delta] C}\]
Give the structures of A, B and C in the following reaction:
\[\ce{CH3COOH ->[NH3][\Delta] A ->[NaOBr] B ->[NaNO2/HCl] C}\]
Give the structures of A, B and C in the following reaction:
\[\ce{C6H5NO2 ->[Fe/HCl] A ->[HNO2][273 K] B ->[C6H5OH] C}\]
An aromatic compound ‘A’ on treatment with aqueous ammonia and heating forms compound ‘B’ which on heating with Br2 and KOH forms a compound ‘C’ of molecular formula C6H7N. Write the structures and IUPAC names of compounds A, B and C.
Complete the following reaction:
\[\ce{C6H5NH2 + CHCl3 + alc. KOH ->}\]
Complete the following reaction:
\[\ce{C6H5N2Cl + H3PO2 + H2O ->}\]
Complete the following reaction:
\[\ce{C6H5NH2 + H2SO4 (conc.)}\]
Complete the following reaction:
\[\ce{C6H5N2Cl + C2H5OH ->}\]
Complete the following reaction:
\[\ce{C6H5NH2 + Br2 (aq) ->}\]
Complete the following reaction:
\[\ce{C6H5NH2 + (CH3CO)2O ->}\]
Complete the following reaction:
\[\ce{C6H5N2Cl ->[(i) HBF4][(ii) NaNO2/Cu, \Delta]}\]
Why cannot aromatic primary amines be prepared by Gabriel phthalimide synthesis?
Write the reaction of aromatic primary amine with nitrous acid.
Write the reaction of aliphatic primary amine with nitrous acid.
Give a plausible explanation for the following:
Why are amines less acidic than alcohols of comparable molecular masses?
Give a plausible explanation for the following:
Why do primary amines have higher boiling points than tertiary amines?
Give a plausible explanation for the following:
Why are aliphatic amines stronger bases than aromatic amines?
Solutions for 9: Amines
NCERT solutions for Chemistry Part 1 and 2 [English] Class 12 chapter 9 - Amines
Shaalaa.com has the CBSE, Karnataka Board PUC Mathematics Chemistry Part 1 and 2 [English] Class 12 CBSE, Karnataka Board PUC solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT solutions for Mathematics Chemistry Part 1 and 2 [English] Class 12 CBSE, Karnataka Board PUC 9 (Amines) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.
Concepts covered in Chemistry Part 1 and 2 [English] Class 12 chapter 9 Amines are Introduction of Amines, Classification of Amines, Structure of Amines, Physical Properties of Amines, Nomenclature of Animes, Uses of Amines, Identification of Primary, Secondary and Tertiary Amines, Cyanides and Isocyanides, Introduction of Diazonium Salts, Method of Preparation of Diazonium Salts, Importance of Diazonium Salts in Synthesis of Aromatic Compounds, Preparation of Amines, Chemical Reactions of Amines - Basic Character of Amines, Chemical Reactions of Amines - Alkylation and Acylation, Chemical Reactions of Amines - Carbylamine Reaction, Chemical Reactions of Amines - Reaction with Nitrous Acid, Chemical Reactions of Amines - Reaction with Arylsulphonyl Chloride, Chemical Reactions of Amines - Electrophilic Substitution, Physical Properties of Diazonium Salts, Chemical Reaction of Diazonium Salts - Reactions Involving Displacement of Nitrogen, Chemical Reaction of Diazonium Salts - Reactions Involving Retention of Diazo Group, Organic Compounds Containing Nitrogen Numericals, Overview of Amines, Introduction of Amines, Classification of Amines, Structure of Amines, Physical Properties of Amines, Nomenclature of Animes, Uses of Amines, Identification of Primary, Secondary and Tertiary Amines, Cyanides and Isocyanides, Introduction of Diazonium Salts, Method of Preparation of Diazonium Salts, Importance of Diazonium Salts in Synthesis of Aromatic Compounds, Preparation of Amines, Chemical Reactions of Amines - Basic Character of Amines, Chemical Reactions of Amines - Alkylation and Acylation, Chemical Reactions of Amines - Carbylamine Reaction, Chemical Reactions of Amines - Reaction with Nitrous Acid, Chemical Reactions of Amines - Reaction with Arylsulphonyl Chloride, Chemical Reactions of Amines - Electrophilic Substitution, Physical Properties of Diazonium Salts, Chemical Reaction of Diazonium Salts - Reactions Involving Displacement of Nitrogen, Chemical Reaction of Diazonium Salts - Reactions Involving Retention of Diazo Group, Organic Compounds Containing Nitrogen Numericals, Overview of Amines.
Using NCERT Chemistry Part 1 and 2 [English] Class 12 solutions Amines exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Solutions are essential questions that can be asked in the final exam. Maximum CBSE, Karnataka Board PUC Chemistry Part 1 and 2 [English] Class 12 students prefer NCERT Textbook Solutions to score more in exams.
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