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Methylamine is soluble in water but not ...

Methylamine is soluble in water but not aniline. Explain.

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Methylamine forms H-bonds with water and hence it is soluble in water. ltBrgt
In contrast the large hydrocarbon part of aniline retards the tendency of the `-NH_(2)` group to form H-bonds with water and hence it is only sparingly soluble in water.
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Account for the following: (i) pK_(b) of aniline is more than that of methylamine. (ii) Ethylamine is soluble in water whereas aniline is not. (iii) Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide. (iv) Although amino group is o– and p– directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline. (v) Aniline does not undergo Friedel-Crafts reaction. (vi) Diazonium salts of aromatic amines are more stable than those of aliphatic amines. (vii) Gabriel phthalimide synthesis is preferred for synthesising primary amines.

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PRADEEP-ORGANIC COMPOUNDS CONTAINING NITROGEN-ADDITIONAL QUESTIONS (VERY SHORT ANSWER QUESTIONS)
  1. (a) Arrange the following in the increasing order of boiling points: ...

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  2. Account for the following (i)Primary amines (R-NH(2)) have higher b...

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  3. Methylamine is soluble in water but not aniline. Explain.

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  4. Arrange the following compunds in increasing order of solubility in wa...

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  5. What amine salts are used for determining their molecular masses?

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  6. Why is carbon nitrogen bond length in aromatic amines shorter than in ...

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  7. Why is an alkylamine more basic than ammonia ?

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  8. Which is more acidic (or basic), aniline or ammonia?

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  9. Arrange the following in decreasing order of their basic strength: amm...

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  10. How is the basic strength of aromatic amines affected by the presence...

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  11. Arrange the following in the increasing order of their basicities. (...

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  12. Arrange the following in increasing order of their acid strength: meth...

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  13. CH(3)CONH(2) is a weaker base than CH(3)CH(2)NH(2).

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  14. Give the structures of the products A, B and C in the following reacti...

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  15. How will you canvert the following : (i) Nitrobenzene into aniline, ...

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  16. The product of mustard oil reaction is

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  17. Give a chemical test to distinguish between a primary and a secondary ...

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  18. Electrophilic substitution in case of aromatic amines takes place more...

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  19. Direct nitration of aniline is not carried out. Explain.

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  20. Give reason: Aniline gets coloured on standing in air for a long time...

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