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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Arrange the following in increasing order of their basic strength: C2H5NH2, (C2H5)2NH, (C2H5)3N, C6H5NH2

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प्रश्न

Arrange the following in increasing order of their basic strength:

C2H5NH2, (C2H5)2NH, (C2H5)3N, C6H5NH2

दीर्घउत्तर
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उत्तर

Considering the inductive effect and the steric hindrance of the alkyl groups, C2H5NH2, (C2 H5)2NH2,and their basic strengths as follows:

C2H5NH2 < (C2H5)3N < (C2H5)2NH

Again, due to the −R effect of C6H5 group, the electron density on the N atom in C6H5NH2 is lower than that on the N atom in C2H5NH2.

Therefore, the basicity of C6H5NH2 is lower than that of C2H5NH2. Hence, the given compounds can be arranged in the increasing order of their basic strengths as follows:

C6H5NH2 < C2H5NH2 < (C2H5)3N < (C2H5)2NH

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पाठ 9: Amines - Intext Questions [पृष्ठ २७४]

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एनसीईआरटी Chemistry Part 1 and 2 [English] Class 12
पाठ 9 Amines
Intext Questions | Q 9.4 (ii) | पृष्ठ २७४

संबंधित प्रश्‍न

Give reason for the following:

Primary amines have higher boiling point than tertiary amines.


Arrange the following: C2H5NH2, C2H5OH, (CH3)3N – in the increasing order of their boiling point


Arrange the following in increasing order of their basic strength :


  1. Write structures of different isomeric amines corresponding to the molecular formula C4H11N.
  2. Write the IUPAC names of all the isomers.
  3. What type of isomerism is exhibited by different pairs of amines?

How will you convert Benzene into aniline?


Account for the following:

Gabriel phthalimide synthesis is preferred for synthesising primary amines.


Complete the following reaction:

\[\ce{C6H5N2Cl + H3PO2 + H2O ->}\]


Give reasons CH3NH2 is more basic than C6H5NH2.


 Arrange the following in the increasing order of their pKb values:

C6H5NH2, C2H5NH2, C6H5NHCH3


Arrange the following in increasing order of basic strength :

C6H5NH2, C6H5NHCH3, C6H5N(CH3)2


The CORRECT decreasing order of boiling points is:


Which of the following should be most volatile?


Assertion: N-Ethylbenzene sulphonamide is soluble in alkali.

Reason: Hydrogen attached to nitrogen in sulphonamide is strongly acidic.


Account for the following:

N-ethylethanamine boils at 329.3 K and butanamine boils at 350.8 K, although both are isomeric in nature.


Acetic acid exist as dimer in benzene due to


The hydrogen bond is shortest in


Which of the following compound gives a secondary amine oh reduction?


Which one of the following compounds will liberate CO2, when treated with NaHCO3?


Arrange the following in increasing order of their boiling point:

C2H5OH, C2H5NH2, (C2H5)3N


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