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प्रश्न
Arrange the following:
In increasing order of solubility in water:
C6H5NH2, (C2H5)2NH, C2H5NH2
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उत्तर
The more extensive the H-bonding, the higher is the solubility. C2H5NH2 contains two H-atoms, whereas (C2H5)2NH contains only one H-atom. Thus, C2H5NH2 undergoes more extensive H-bonding than (C2H5)2NH. Hence, the solubility in water of C2H5NH2 is more than that of (C2H5)2NH.
Further, the solubility of amines decreases with an increase in the molecular mass. This is because the molecular mass of amines increases with an increase in the size of the hydrophobic part. The molecular mass of C6H5NH2 is greater than that of C2H5NH2 and (C2H5)2NH.
Hence, the increasing order of their solubility in water is as follows:
C6H5NH2 < (C2H5)2NH < C2H5NH2
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संबंधित प्रश्न
In the following
The compound ‘B’ is _______.
(A) Propan–1–amine
(B) Propan–2–amine
(C) Isopropylamine
(D) Dimethylamine
How are amines classified depending on the functional group? Give one example of each class of amines.
A tertiary amine is an organic compound ____________.
The product formed by the reaction an aldehyde with a primary amine ____________.
When aniline reacts with acetic anhydride the product formed is ____________.
The order of basic strength for methyl substituted amines in aqueous solution is ____________.
Which one of the following is most basic?
Write a short note on the following:
Gabriel phthalimide synthesis
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.
Account for the following.
Although amino group is o- and p-directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline.
Arrange the following.
In decreasing order of basic strength in gas phase (C2H5)NH2, (C2H5)NH, (C2H5)3N and NH3.
Arrange the following.
In decreasing order of basic strength
How will you prepare propan-1-amine from butane nitrile?
Identify A, B and C.
\[\ce{CH3 - NO2 ->[LiAlH4] A ->[2CH3CH2Br] B ->[H2SO4] C}\]
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
Classify the following amine as primary, secondary or tertiary:
Classify the following amine as primary, secondary or tertiary:
(C2H5)2CHNH2
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 a short note on the following.
Ammonolysis
Account for the following:
Aniline does not undergo Friedel-Crafts reaction.
Write short note on Ammonolysis.
Write short note on the following:
Ammonolysis
