Question

5 moles of SO₂ and 5 moles of O₂ are allowed to react to form SO₃ in a closed vessel. At the equilibrium stage 60% of SO₂ is used up. The total number of moles of SO₂ , O₂ and SO₃ in the vessel now is:

(A) 8.5 (B) 9.5 (C) 10 (D) 10.5

Answer 1

Correct option (A) 8.5

Explanation:

5 moles of SO₂ and 5 moles of O₂ are allowed to react to form SO₃ in a closed vessel. At the equilibrium stage 60% of SO₂ is used up. The total number of moles of SO₂ , O₂ and SO₃ in the vessel now is 8.5.