Question

The process of producing sulfur dioxide from its elements (i.e. S2(g) and O2(g)) is reported to be 62% efficient. How much sulfur (in g) must react so that 1.00 g SO2 will be collected?

S2(g) + 2O2(g) → 2SO2(g)

Answer 1

Molar mass of SO₂: 64.066 g/mol

Moles of $SO_2=\frac{1}{64.066}=0.016moles$

Moles of $S_2=\frac{0.016}{2}=0.008moles$

Mass$=0.008× 64.13=0.51304grams$