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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
Classify the following amine as primary, secondary or tertiary:
(C2H5)2NH
Choose the most correct option.
The hybridisation of nitrogen in primary amine is ____________.
Isobutylamine is an example of ______.
Choose the most correct option.
Which type of amine does produce N2 when treated with HNO2?
What is the action of nitrous acid on the following compounds?
Isopropyl amine
How are amines classified depending on the functional group? Give one example of each class of amines.
A tertiary amine is an organic compound ____________.
Assertion: Acetamide on reaction with KOH and bromine gives acetic acid.
Reason: Bromine catalyses hydrolysis of acetamide.
Which of the following amines does not undergo acetylation?
Write a short note on the following:
Gabriel phthalimide synthesis
Write a short note on the following.
Schotten-Baumann reaction
Write a short note on the following.
Carbylamine 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.
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
How will you convert diethylamine into N, N-diethyl acetamide?
The main product is formed by treating an alkyl or benzyl halide with excess ammonia ____________.
The amine formed from an amide by mean of bromine and alkali has how many number of carbon atoms?
The reaction of NHO2 with 'A' gives quartering ammonium salt. A is which of the following?
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:
Account for the following:
Aniline does not undergo Friedel-Crafts reaction.
Write short note on Ammonolysis.
