Given the following balanced equation, determine the rate of reaction with respect to [SO₂]: 2SO₂ (g) + O₂ (g) → 2SO₃ (g)

Answer choices:

a. Rate = -1/2 ΔSO₂ / Δt

b. Rate = +1/2 ΔSO₂ / Δt

c. Rate = -ΔSO₂ / Δt

d. Rate = +2ΔSO₂ / Δt

e. It is not possible to determine without more information