Question

in sulphur estimation 0.16 G of an organic compound gives 0.52 gram of Barium sulphate what is the percentage of sulphur in the compound​

Answer 1

20

The molar masses of barium sulphate and sulphur are 233 g/mol and 32.1 g/mol respectively.

Number of moles of BaSO

4

=

233

0.233

=0.001 mol =number of moles of S.

Mass of S=0.001×32.1=0.0321g

Percentage of S=

0.16

100×0.0321

=20 %