English

How are amines classified? - Chemistry

Advertisements
Advertisements

Question

How are amines classified?

Answer in Brief

Solution

Classification of Amines:

i. Amines are classified as primary (1°), secondary (2°), and tertiary (3°) amines.

ii. Their structures are obtained in a simple way by replacing one, two, or three hydrogen atoms of NH3 molecule by alkyl/aryl groups.

iii. Secondary and tertiary amines are further classified as simple or symmetrical amines and mixed or unsymmetrical amines.

iv. When all the alkyl or aryl groups on nitrogen are the same, it is a simple amine. If these groups are different, then the amine is a mixed amine.

v. Amines are also divided into two major classes, namely, aliphatic and aromatic amines on the basis of the nature of the groups attached to the nitrogen atom.

shaalaa.com
  Is there an error in this question or solution?
Chapter 13: Amines - Exercises [Page 297]

APPEARS IN

Balbharati Chemistry [English] 12 Standard HSC
Chapter 13 Amines
Exercises | Q 4.2 | Page 297

RELATED QUESTIONS

Classify the following amine as primary, secondary or tertiary:

(C2H5)2NH


In the following 

The compound ‘B’ is _______.
(A) Propan–1–amine

(B) Propan–2–amine

(C) Isopropylamine

(D) Dimethylamine


Isobutylamine is an example of ______.


Choose the most correct option.

Carbylamine test is given by ____________.


What are amines?


Write the number of moles of ethanoyl chloride required for complete acylation of N, N-dimethylaniline.


How are amines classified depending on the functional group? Give one example of each class of amines.


Which of the following amines is most basic in nature in aqueous phase?


\[\ce{Aniline + benzoylchloride ->[NaOH] C6H5 - NH - COC6H5}\] this reaction is known as ____________.


Which of the following amines does not undergo acetylation?


Which one of the following is most basic?


How will you convert nitrobenzene into m-nitro aniline?


Write a short note on the following.

Ammonolysis


Write a short note on the following.

Schotten-Baumann reaction


Account for the following.

Gabriel phthalimide synthesis is preferred for synthesising primary amines.


Account for the following.

Ethylamine is soluble in water whereas aniline is not.


Arrange the following.

In increasing order of solubility in water, C6H5NH2, (C2H5)2NH, C2H5NH2


Arrange the following.

In decreasing order of basic strength in gas phase (C2H5)NH2, (C2H5)NH, (C2H5)3N and NH3.


Arrange the following.

In increasing order of boiling point C6H5OH, (CH3)2NH, C2H5NH2.


Arrange the following.

In decreasing order of the pKb values C2H5NH2, C6H5NHCH3, (C2H)2NH and CH3NH2.


Arrange the following.

Increasing order of basic strength C6H5NH2, C6H5N(CH3)2, (C2H5)2NH and CH3NH2.


How will you prepare propan-1-amine from propanamide?


How will you prepare propan-1-amine from 1-nitropropane?


Identify A, B and C.

\[\ce{CH3 - NO2 ->[LiAlH4] A ->[2CH3CH2Br] B ->[H2SO4] C}\]


How will you convert diethylamine into N, N-diethyl acetamide?


The following amine can be classified as (C2H5)2NH:


The main product is formed by treating an alkyl or benzyl halide with excess ammonia ____________.


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

C2H5NH2, C6H5NH2, (C2H5)2NH


Complete the following reaction.


The reaction of NHO2 with 'A' gives quartering ammonium salt. A is which of the following?


\[\begin{array}{cc}
\ce{O}\phantom{.........}\\
||\phantom{.........}\\
\ce{H - \underset{(A)}{C} - NH - CH3}
\end{array}\]

and 

\[\begin{array}{cc}
\ce{O}\\
||\\
\ce{CH3 - \underset{(B)}{C} - NH2}
\end{array}\]

are which type of isomers?


Classify the following amine as primary, secondary or tertiary:


Classify the following amine as primary, secondary or tertiary:

(C2H5)2CHNH2


Assertion A: Aniline on nitration yields ortho, meta and para nitro derivatives of aniline.

Reason R: Nitrating mixture is a storng acidic mixture.
In the light of the above statements, choose the correct answer from the options given below: 


Among the following, which is the strongest base?


Arrange the increasing order of solubility in water.

\[\ce{C2H5Cl, C2H5NH2, C2H5OH}\]


Write short note on the following:

Ammonolysis


Write short notes on the following

Ammonolysis


Write a short note on the following.

Ammonolysis


Write short note on the following.

Ammonolysis


Write short note on the following.

Ammonolysis


Write short note on the following:

Ammonolysis


Write a short note on the following.

Ammonolysis


Write a short note on the following.

Ammonolysis


Write a short note on the following.

Ammonolysis


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×