Question

Sulfuric acid may be produced by the following process: 4FeS2 + 11O2 2Fe2O3 +8SO2 2SO2 +O2 2SO3 SO3 + H2O H2SO4 How many moles of H2SO4 will be produced from 7.74 moles of FeS2?

Answer 1

Sulfuric acid may be produced by the following process:

4FeS2 + 11O2 --> 2Fe2O3 +8SO2

2SO2 +O2 --> 2SO3

SO3 + H2O --> H2SO4

How many moles of H2SO4 will be produced from 7.74 moles of FeS2?

Ratios:

4 mol of FeS2 --> 8 mol of SO2

2 mol of SO2 --> 2 mol of SO3

1 mol of SO3 --> 1mol of H2SO4

now:

7.74 mol of FeS2 --> 7.74 *2 = 15.48 mol of SO2

15.48 mol of SO2 = 15.48 mol of SO3

15.48 mol of SO3 = 15.48 mol of H2SO4

so

15.48 mol of H2SO4 forms... or 15.5 rounding up