How is sulphur detected using the Sodium fusion extract of the given o

1.	How is sulphur detected using the Sodium fusion extract of the given organic compound?
Answer» Solution :Te sodium FUSION EXTRACT is acidified with ACETIC and lead acetate. A BLACK precipitate of lead SULPHITE is formed which indicates the presence of sulphur. `overset(2-)(S)+overset(2+)(Pb)-underset("black ppt")(PbS)`

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