equilibrium constant Kp

• Partial pressure


  The pressure that a gas would have if it alone occupied the volume occupied by the whole mixture
• If a mixture of gases contains 3 different gases then the total pressure will equal the 3 partial pressures added together
• Kp


  Equilibrium constant using partial pressures of gases
• Kp only includes gases in the expression, ignoring solids, liquids, and aqueous substances
• Kp and Kc only change with temperature, not pressure or concentration
• Increasing temperature in an exothermic forward reaction

  Shifts equilibrium backwards, decreasing Kp
• Increasing pressure in a reaction with fewer moles of gas on product side


  Shifts equilibrium forwards, but Kp stays constant