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Question -

In the estimation ofsulphur by Carius method, 0.468 g of an organic sulphur compound afforded 0.668g of barium sulphate. Find out the percentage of sulphur in the given compound.



Answer -

Total mass of organiccompound = 0.468 g [Given]

Mass of barium sulphateformed = 0.668 g [Given]

1 mol of BaSO4 =233 g of BaSO4 = 32 g of sulphur

Thus, 0.668 g of BaSO4 contains of sulphur = 0.0917 g ofsulphur
Therefore, percentage ofsulphur  = 19.59 %

Hence, the percentage ofsulphur in the given compound is 19.59 %.

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