11.5 - Factors Affecting Systems at Equilibrium

• what does a greater value of Kc/Kp mean?

  equilibrium lies further to the right
• what does a lower value of Kc/Kp mean?

  equilibrium lies further to the left
• how does a change in concentration affect Kc/Kp?

  position of equilibrium changes to maintain equilibrium constant the same as long as temperature is constant

  changes amounts of reactants and products but not ratios
• how does a change in pressure affect Kp?

  only affects reactions involving gases

  changes position of equilibrium but not Kp at a constant temperature

  changes partial pressures of all gases so doesn't change the ratio
• how does a change in temperature affect Kc/Kp?

  changes position of equilibrium and equilibrium constant because it's only constant for a constant temperature
• what happens to Kp/Kc if change in temperature leads to less products?

  it decreases
• what happens to Kc/Kp if change in temperature leads to more products?

  it increases
• how do catalysts affect equilibrium?

  don't affect position or equilibrium constant because it speeds up rate of forward and backward reaction equally so it only means equilibrium is reached faster