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Percentage Composition of an Element in a Compound

0.2175 g of t...

Question

0.2175 g of the substance gave 0.5825g of $B a S O_{4}$ by Carius method.Calculate the percentage of Sulphar.

A

36.78%

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B

39.52%

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C

32.86%

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D

41.85%

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Solution

The correct option is A 36.78%
Mass of organic compound = 0.2175

Mass of BaSO4 = 0.5825

% of S = 32/233 x mass of BaSO4/ mass of organic comp x 100

% S = 32/233 x 0.5825/0.2175 x 100 = 36.579

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