Consider the reaction

N2 (g) + O2 (g) ⇌ 2NO (g)

If the equilibrium partial pressures of N2, O2, and NO are 0.22, 0.19, and 0.030 atm, respectively, at 2200°C, what is KP?

Kp of the reaction is 0.0215

Explanation:

Step 1: Data given

Partial pressure at the equilibrium of N2 = 0.22 atm

Partial pressure at the equilibrium of O2 = 0.19 atm

Partial pressure at the equilibrium of NO = 0.030 atm

Temperature = 2200 °C

Step 2: The balanced equation

N2 (g) + O2 (g) ⇌ 2NO (g)

Step 3: Calculate Kp

Kp = (pNO) ² / (pO2) * (pN2)

Kp = (0.030) ² / (0.19*0.22)

Kp = 0.0215

Kp of the reaction is 0.0215