Answer to Question #263804 in General Chemistry for Salem

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

From the question we already know the limiting reagent is S2.

From the efficiency, we can get the theoretical yield.

Efficiency=(actual/theoretical)×100

Theoretical=(Actual yiled×100)/Efficiency

Theoretical yield=100/62

Theoretical yield=1.61g

If 64g of S2 produce 128g of SO2

Xg of S2 will produce 1.61g of SO2

X=0.81g