1.10 Kp

• Kp is the equilibrium constant for reversible reactions containing gases
• mole fraction of gas A = mole A / total moles
• partial pressure = mole fraction of A x total pressure
• change in equilibrium position on Kp

  right -> Kp increases

  left -> Kp decreases
• Kp is usually measure in KPa
• What happens to the Kp if the forward reaction is exo and the temp has increases?

  favours the endo (backwards) to counteract change - equilib shifts left -> Kp decreases