The Kjeldahl's method for the estimation of n | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The Kjeldahl's method is not applicable to compounds containing nitrogen in nitro $(-NO_2)$ or azo $(-N=N-)$ groups,or nitrogen present in a ring

Vedclass · Accepted Answer

Vedclass · Answer

(B) The Kjeldahl's method is not applicable to compounds containing nitrogen in nitro $(-NO_2)$ or azo $(-N=N-)$ groups,or nitrogen present in a ring (like pyridine),because the nitrogen in these compounds is not quantitatively converted to ammonium sulphate under the conditions of the Kjeldahl's method.Among the given options:$A$. Nitrobenzene contains a nitro group.$B$. Aniline $(C_6H_5NH_2)$ contains an amino group,which is easily converted to ammonium sulphate.$C$. Azobenzene contains an azo group.$D$. Pyridine contains nitrogen in the ring.Therefore,the Kjeldahl's method can be used for Aniline.

The Kjeldahl's method for the estimation of nitrogen can be used to estimate the amount of nitrogen in which one of the following compounds?

Similar Questions

In which of the following compounds will nitrogen not be detected by the Lassaigne test?

Why is nitric acid added to sodium extract before adding silver nitrate for testing halogens?

Sodium extract is heated with concentrated $HNO_3$ before testing for halogens because

The sodium fusion extract is boiled with concentrated nitric acid while testing for halogens. By doing so,it

Which of the following compounds is not expected to show Lassaigne's test for nitrogen?

Vedclass Test Series

Exam Paper Generator

Online Exam Module