The reaction 2 NO(g) + O₂(g) ⇌ 2 NO₂(g) has Kp = 5.9 × 10¹² at 298 K
CHEMISTRY · Subjective · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)
Problem
The reaction 2 NO(g) + O₂(g) ⇌ 2 NO₂(g) has Kp = 5.9 × 10¹² at 298 K. An equilibrium mixture has partial pressures P_NO = 3.0 × 10⁻⁴ atm, P_O₂ = 1.0 × 10⁻³ atm, and P_NO₂ = 5.3 atm. The container volume is then doubled at constant temperature. Determine the reaction quotient Qp immediately after the volume change and indicate the direction (toward reactants or products) in which the net reaction will proceed to re-establish equilibrium.