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Amines

Short Answer Type

121.

Why the order of boiling of isomeric amines are Primary > Secondary > Tertiary ?

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122. Give industrial application of diazotization.

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123.

Write the products of the reaction of

Also write their IUPAC names.

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124.

Giving a reason, arrange the following amines in order of decreasing basicity.

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125. Write the conjugate acid and conjugate base of:

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126.

Complete the reaction:
CH₃NH₂ + H₂O →

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127.

Complete the reaction:
CH₃CHNH₂ + HCl(g) →

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128.
How will you purify aniline containing non-basic impurities ?

Aniline is of basic nature. In order to remove non-basic impurities, it is treated with dilute HCl when aniline forms non-volatile hydrochloride. The impurities can be removed by distillation. From the hydrochloride, aniline can be regenerated by reacting with a base such as sodium hydroxide.

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Long Answer Type

129.

Write the structure of the isomeric aromatic amines with formula C₇H₉N and give their IUPAC names.

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Short Answer Type

130. Write chemical equations for the following reactions:
(i) Reaction of ethanolic NH₃ with C₂H₅Cl.

(ii) Ammonolysis of benzyl chloride and reaction of amine so formed with two moles of CH₃l.

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