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  • Kjeldahl's method can be used for:Option: 1 <img alt="\mathrm{PhNO _{2}}" src="https://entrancecorner.

Kjeldahl's method can be used for:

Option: 1

\mathrm{PhNO _{2}}


Option: 2

\mathrm{P h N H C O P h}


Option: 3

Azobenzene


Option: 4

Pyridine


Answers (1)

best_answer
Kjeldahl's Method -

Kjeldahl's method is a method for the quantitative determination of nitrogen contained in organic substances.

But, Kjeldahl's method cannot be used for nitrogen determination of compounds having nitro-group or azo-group or nitrogen present in rings as the nitrogen of these compounds cannot be converted to ammonium sulphate \mathrm{(NH_{4})_{2}SO_{4}} under the conditions of this method.

Hence, the correct answer is Option (2)

Posted by

Divya Prakash Singh

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