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182.

Identify the substances A and B in each of the following sequences of reactions:
CH₃CONH₂ is a weaker base than CH₃CH₂NH₂

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183.

ROH is a stronger acid than RNH₂.

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184.

Show how p-amino azobenzene can be prepared from aniline?

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185.

Explain the following reactions by taking one suitable example in each case:
Hoffmann's bromamide reaction.

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186.

Explain the following reactions by taking one suitable example in each case:
Gattermann’s reaction.

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187.

How is ethylamine prepared from acetonitrile? Compare its basic character with that of ammonia.

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188.

How is aniline prepared commercially? Describe carbylamines test for primary amines.

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189.

Describe the method for the identification of primary, secondary and tertiary amines. Also write chemical equations of the reactions involved.

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190. Write IUPAC names of following and classify them into primary, secondary, tertiary amines:
(CH₃)₂CHNH₂

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