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Reactions of Aryl Amines (Diazo Salts)

the duma"s me...

Question

the duma"s method is more applicable to nitrogen containing organic compounds than kjeldahl"s method , why?

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Solution

The two major advantages of Dumas method are:

Faster analysis i.e. around 5 minutes against few hours for kjeldahl.

Use of toxic and hazardous chemicals is avoided in Dumas method.

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STATEMENT-1 : Dumas method is more applicable to nitrogen containing organic compounds than Kjeldahl's method.
STATEMENT-2 : Kjeldahl's method does not give satisfactory results for compounds in which nitrogen is linked to oxygen.

Q. Assertion :Dumas method is more applicable to nitrogen-containing organic, compounds than Kjeldahl's method Reason: Kjeldahl's method does not give satisfactory results for compounds in which N is linked to O atom

Q. Assertion :Dumas method is more applicable to nitrogen containing organic compounds than Kjeldahl's method. Reason: Kjeldahl's method does not give satisfactory results for compounds in which N is linked to O atom.

Q. Differentiate between the principle of estimation of nitrogen in an organic compound by

(i) Dumas method and
(ii) Kjeldahls method

Q. In Dumas method, 0.5 g of an organic compound containing nitrogen gave 112 ml of nitrogen at S.T.P. The percentage of nitrogen in the compound is:

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Reactions of Aryl Amines (Diazo Salts)

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