wiz-icon
MyQuestionIcon
MyQuestionIcon
7
You visited us 7 times! Enjoying our articles? Unlock Full Access!
Byju's Answer
Standard XII
Chemistry
Introduction to Aromatic Compounds
The fusion of...
Question

The fusion of an organic compound with solid sodium metal is undertaken for testing nitrogen, sulphur and halogens. This test is called:

A
Dumas method
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Carius method
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Kjeldahl's method
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Lassaigne's test
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D Lassaigne's test
It is a general test for the detection of halogens, nitrogen and sulphur in an organic compound. These elements are covalently bonded to the organic compounds. Lassaigne’s test can be carried out only in ionic form. Thus, the elements in a compound are converted from covalent to ionic form by fusing an organic compound with Sodium (Na) metal. The ionic compounds formed during the fusion are extracted in aqueous solution and can be used for detection of halogens, nitrogen and sulphur by simple chemical tests. This called Lassaigne's test.

flag
Suggest Corrections
thumbs-up
1
similar_icon
Similar questions
Q. The fusion of an organic compound with solid sodium hydroxide is undertaken for testing nitrogen,sulphur and halogens. This test is called:
Q. Explain the reason for the fusion of an organic compound with metallic sodium for testing nitrogen. sulphur, and halogens.
Q. The sodium test, or Lassaigne’s test, is used in an elemental analysis of the qualitative determination of the presence of foreign elements, namely halogens, nitrogen, sulphur and phosphorus in an organic compound.
The test involves heating the sample strongly with a clean sodium metal, ‘fusing’ it with the sample. The ‘fused’ sample is then plunged into water, and the usual qualitative tests are performed on the resultant solution for the respective possible constituents.
Which of the following compounds will give negative Lassaigne’s test for nitrogen?
Q. In the sodium fusion test of organic compounds, the nitrogen of an organic compound is converted to:
Q. The sodium test, or Lassaigne’s test, is used in an elemental analysis of the qualitative determination of the presence of foreign elements, namely halogens, nitrogen, sulphur and phosphorus in an organic compound.
The test involves heating the sample strongly with a clean sodium metal, ‘fusing’ it with the sample. The ‘fused’ sample is then plunged into water, and the usual qualitative tests are performed on the resultant solution for the respective possible constituents.

When both N and S are present in an organic compound, the sodium extract with FeCl3 gives a:
View More
Join BYJU'S Learning Program
explore_more_icon
Explore more
Introduction to Aromatic Compounds
Standard XII Chemistry
Join BYJU'S Learning Program
book_image
AI Tutor
book_image
Textbooks
book_image
Question Papers
book_image
Install app
CrossIcon