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Arrange the following in increasing order of their basic strength: C2H5NH2, C6H5NH2, NH3, C6H5CH2NH2 and (C2H5)2NH

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प्रश्न

Arrange the following in increasing order of their basic strength:

C2H5NH2, C6H5NH2, NH3, C6H5CH2NH2 and (C2H5)2NH

दीर्घउत्तर
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उत्तर

Considering the inductive effect of alkyl groups, NH3, C2H5NH2, and (C2H5)2NH can be arranged in the increasing order of their basic strengths as:

NH3 < C2H5NH2 < (C2H5)2NH

Again, C6H5NH2 has proton acceptability less than NH3. Thus, we have:

C6H5NH2 < NH3 < C2H5NH2 < (C2H5)2NH

Due to the −I effect of C6H5 group, the electron density on the N-atom in C6H5CH2NH2 is lower than that on the N-atom in C2H5NH2, but more than that in NH3. Therefore, the given compounds can be arranged in the order of their basic strengths as:

C6H5NH2 < NH3 < C6H5CH2NH2 < C2H5NH2 < (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 (i) | पृष्ठ २७४

संबंधित प्रश्‍न

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?

Complete the following acid-base reaction and name the product:

\[\ce{(C2H5)3N + HCl ->}\]


Arrange the following:

In increasing order of boiling point:

C2H5OH, (CH3)2NH, C2H5NH2


Accomplish the following conversion:

Aniline to p-bromoaniline


Give a plausible explanation for the following:

Why are aliphatic amines stronger bases than aromatic amines?


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

C6H5NH2, C2H5NH2, C6H5NHCH3


Tertiary amines have lowest boiling points because ________________


The CORRECT decreasing order of solubility in water will be ____________.


Among the following isomeric amines, an amine having highest boiling point is:


Which of the following should be most volatile?


A compound Z with molecular formula \[\ce{C3H9N}\] reacts with \[\ce{C6H5SO2Cl}\] to give a solid, insoluble in alkali. Identify Z.


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.


Dimerisation of carboxylic acids is due to


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 decreasing boiling point.

\[\ce{CH3COOH, C2H5OH, CH3NH2, CH3OCH3}\]


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