Question Detail

CHM 102 Qualitative and Quantitative Analysis in Organic Chemistry Objective Question

Question

In Lassaigne's test, what is the purpose of fusing the organic compound with sodium metal?
Options
A To oxidize the compound completely
B To convert covalently bonded elements (N, S, halogens) into their ionic forms
Correct Answer
C To distill the compound
D To precipitate the compound
Correct Answer

Option B is the correct answer.

Detailed Explanation

Sodium fusion converts covalently bound elements like N, S, and halogens into soluble ionic salts (e.g., NaCN, Na₂S, NaX) that can be detected by specific chemical tests.

Hint

Make ionic species for detection.

Question Info