Complete and balance each of the following equations: from Chem
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    Amines

    Multiple Choice QuestionsShort Answer Type

    251.

    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.
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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

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    259. Complete and balance each of the following equations:
    straight C subscript 6 straight H subscript 5 NH subscript 2 plus CHCl subscript 3 plus NaOH space rightwards arrow with blank on top
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    260. Complete and balance each of the following equations:
    straight C subscript 6 straight H subscript 5 NH subscript 2 CN space plus space 2 straight H subscript 2 space rightwards arrow with Ni on top ?
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