40 Kp = PSO₃² / (PSO₂² · PO₂) = (0.40)² / [(0.20)²(0.10)] = 0.16 / 0.004 = 40.

Calculating the Equilibrium Constant

AP Chemistry· difficulty 3/5

For 2 SO₂(g) + O₂(g) ⇌ 2 SO₃(g), equilibrium partial pressures are measured.

Calculate Kp.

Explanation

Kp = P_SO₃² / (P_SO₂² \cdot P_O₂) = (0.40)² / [(0.20)²(0.10)] = 0.16 / 0.004 = 40.

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