Amines

Short Answer Type

Advertisement
Zigya App

Account for the following:
Methylamine in water reacts with ferric chloride to precipitate ferric hydroxide.

 

Due to the +I effect of -CH3 group, methylamine is more basic than water. therefore, in water methylamine produces OH- ions by accepting H+ ions form water.

Methyl amine is a base and dissolves in water to produce hydroxide ions.
CH3 NH2 + H2O ⇌ CH3 NH3⊕ + OHΘ
FeCl3 combines with OH- ions to give reddish brown precipitate of Fe (OH)3

FeCl3 + 3OH- → Fe(OH)3

 

854 Views
  • Switch
    • Advertisement
    Account for the following:
    Gabriel phthalimide synthesis is preferred for the synthesizing amines.
    738 Views
    Answer

    Account for the following:
    Ethylamine is soluble in water, whereas aniline is not.

    178 Views
    Answer
    Account for the following:
    Diazonium ions of aromatic amines are more stable than those of aliphatic amines.
    371 Views
    Answer

    Account for the following:
    pKb of aniline is more than that of methylamine.

    191 Views
    Answer
    Advertisement
    Account for the following:
    Although amino group is o- and p-directing for aromatic electrophilic substitution reaction, aniline on nitration gives a substantial amount of m-nitro aniline.
    292 Views
    Answer
    Account for the following:
    Aniline does not undergo Friedel Craft's reaction.
    831 Views
    Answer

    Give one chemical test to distinguish between the following pairs of compounds.
    Aniline and N — methlyaniline.

    834 Views
    Answer

    Arrange the following:
    In decreasing order of the pKb values C2H5NH2, C6H5 NHCH3, (C2H5)2NH and C6H5NH2.

    783 Views
    Answer
    Advertisement
    <

    Arrange the following:
    In decreasing order of basic strength:
    C    6H5NH2, C6HsN(CH3)2, (C2H5)2NH and CH3NH2

    124 Views
    Answer
    Advertisement