Consider the following reaction of the commercial production of SO ₃using sulfur dioxide and oxygen:
SO₂(g) + O₂(g) → SO₃(g)

If 5.3 L of sulfur dioxide and 4.7 L of oxygen are mixed, how much sulfur trioxide may be produced if all gases are at STP?

Question

Quizplus · Accepted Answer

At STP, gases react in volume ratios equal to their mole ratios. The balanced equation is 2SO₂ + O₂ → 2SO₃, so 2 volumes of SO₂ react with 1 volume of O₂ to produce 2 volumes of SO₃. Since 5.3 L of SO₂ is available, it will react with 2.65 L of O₂ (half of 5.3 L) to produce 5.3 L of SO₃.

Consider the Following Reaction of the Commercial Production of SO