How many moles of SO3 are produced by 2.3 mil FeS2

4.6 moles SO₃

Explanation: Assuming the equation for the reaction is;

4FeS₂ + 15O₂ →2Fe₂O₃ + 8SO₃

We are given 2.3 moles of FeS₂

We are required to determine the number of moles of SO₃ that are produced.

From the equation 4 moles of FeS₂ reacts with 1 moles of Oxygen to produce 2 moles of Fe₂O₃ and 8 moles of SO₃. Therefore, the mole ratio of FeS₂ to SO₃ is 1 : 2 (4 : 8). Thus, moles of SO₃ = moles of FeS₂ * 2

Hence;

Moles of SO₃ = 2.3 moles * 2

= 4.6 moles

Thus, 4.6 moles of SO₃ will be produced when 2.3 moles of FeS₂ are used.