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Complete the following reactions:
$straight C subscript 6 straight H subscript 5 straight N subscript 2 Cl space rightwards arrow from left parenthesis ii right parenthesis thin space NaNO divided by Cu space increment to left parenthesis straight i right parenthesis thin space HBF subscript 4 of$

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252. An aromatic compound A on treatment with aqueous ammonia and heating forms compound ‘B’ on heating with Br₂ and KOH forms a compound ‘C’ of molecular formula C₆H₇N. Write the structures and IUPAC names of compound A B and C.

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253.

Why cannot aromatic primary amines be prepared by Gabriel pthalimide synthesis?

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254. Write the reactions of (i) aromatic, (ii) aliphatic primary amines with nitrous acid.

(i) Primary aromatic amines such as aniline react with nitrous acid under ice cold conditions (273-278 K) to form benzene diazonium salt. The reaction is known as diazotization reaction.

(ii) Primary aliphatic amines react with nitrous acid at low temperature to form primary alcohol and nitrogen gas accompanied by risk effervescence. For example

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255.

Give plausible explanation for each of the following:
Why are amines less acidic than alcohols of comparable molecular masses?

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256.

Give plausible explanation for each of the following:
Why are primary amines higher boiling than tertiary amines?

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257.

Give plausible explanation for each of the following:
Why are aliphatic amines stronger bases than aromatic amines?

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258.

Complete and balance each of the following equations:
$straight C subscript 6 straight H subscript 5 NO subscript 2 plus SN plus HCl space rightwards arrow$