Question

Calculate the percentage composition by Mass of sulphur in tetraoxosulphate(6)acid

Answer 1

Answer:

We need to find the molar mass of this acid, sulfuric acid:

2

+

32

+

4

(

16

)

=

98

g

/

m

o

l

.

The molar mass of sulfur is 32 g/mol.

Note that there is 1 mole of sulfur in 1 mole of this acid. This fact is inferred directly from the molecular formula.

Hence, the percentage by mass of sulfur in sulfuric acid is:

32

g

98

g

×

100

%

=

32.7

%