In Lassaigne's test, the presence of Sulphur is confirmed by treating the sodium fusion extract with — Qualitative and Quantitative Analysis Chemistry Question
Question
In Lassaigne's test, the presence of Sulphur is confirmed by treating the sodium fusion extract with lead acetate. The characteristic observation is:
Answer: B
💡 Solution & Explanation
Sulphur forms sodium sulphide ($Na_2S$) during fusion. Reaction with lead acetate yields a characteristic black precipitate of Lead sulphide ($PbS$).
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