For the reaction: 2 SO₂(g) + O₂(g) ⇌ 2 SO₃(g), Kc = 6.9 × 10²⁴ at 25°C. If a reaction vessel is filled with these gases, such that [SO₂] = 6.0 M, [O₂] = 6.0 M and [SO₃] = 6.0 M, in which direction will the reaction proceed?

Question

Quizplus · Accepted Answer

The reaction quotient, Qc, can be found by plugging in the given concentrations into the expression for Kc. Qc = [SO₃]2 /[SO₂]2 [O₂] Qc = (6.0 M)2 / (6.0 M)2 (6.0 M) = 1.0 Since Qc is smaller than Kc, the reaction will proceed to the right to reach equilibrium and increase the concentration of SO₃. Therefore, the answer is A.

For the Reaction: 2 SO2(g) + O2(g) ⇌ 2 SO3(g)

For the Reaction: 2 SO₂(g) + O₂(g) ⇌ 2 SO₃(g)