Question Detail

CHM 102 Qualitative and Quantitative Analysis in Organic Chemistry Objective Question
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Question

Which test for sulfur in Lassaigne's extract uses lead acetate and gives a black precipitate?
Options
A Sodium nitroprusside test
B Lead acetate test
Correct Answer
C Silver nitrate test
D Ferric chloride test
Correct Answer

Option B is the correct answer.

Detailed Explanation

Acidification of the extract releases H₂S, which reacts with lead acetate to form black lead sulfide (PbS) precipitate.

Hint

Black precipitate of PbS.

Question Info

Course: CHM 102
Topic: Qualitative and Quantitative Analysis in Organic Chemistry
Type: Objective
Difficulty: Not specified
Question 804 of 1999
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