Chemistry WAEC

Consider the equilibrium reaction represented by the following equation: 2SO2(g) + O2(g) ⇌ 2SO3(g); ∆H = 395.7 kJmol-1 Which of the following statements about the equilibrium system is correct?

A. Addition of catalyst changes the equilibrium position
B. Decrease in pressure increase in temperature SO3
C. Decrease in pressure increases the equilibrium concentration of O2
D. Increase in temperature favours the forward reaction

Correct Answer: Option C

C. Decrease in pressure increases the equilibrium concentration of O2

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