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Help me answer: Which of the following compounds will be suitable for Kjeldahl’s method for nitrogen estimation?

Which of the following compounds will be suitable for Kjeldahl’s method for nitrogen estimation?

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

 
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As we learned

Kjeldahl's method -

Percentage\:of\:N=\frac{1.4\times M\times 2(v-v_{1/2})}{m}
 

M=Molarity(v-v_{1/2})vol\:of\:NH_{3}


m=Mass\:of\:O.C

- wherein

 

 Nitrogen present in aromatic ring, Nitro compounds and azo-compounds are not estimated by Kjeldahl’s method.


Option 1)

Option 2)

Option 3)

Option 4)

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