Equilibrium

• Le chateliers principle 


  If a system at equilibrium is disturbed, the equilibrium moves in the direction that tends to reduce the disturbance. so only use to predict the quantity
• Equilibrium position

  Is the proportion of reactants and products which are present at dynamic equilibrium. this can be changed by changing the conditions of the reactions.
• Products increased

  if the proportion of the products is increased the EP is shifted to the right
• Reactants increased

  If the proportion of the reactants increased the equilibrium position is shifted to the left.
• catalyst- condition 


  Adding a catalyst DOES NOT affect the equilibrium position, it increases the rates if both directions equally.
• Concentration- condition - increase 


  Equilibrium will shift to the opposite side of the substance
• Concentration- condition- decrease 


  Equilibrium will shift to the direction of substance deceased
• Pressure- condition- increase

  Systems try to oppose the change so equilibrium position will shift to the side with more moles of gas
• Pressure- condition- decrease

  System try to oppose this change so equilibrium position will shift to the side with moles of gas
• Temperature- condition- increase

  If temp increase, the system oppose this change by taking in energy to reduce the temperature. the equilibrium will shift in endothermic
• Temperature- condition- decrease 


  The system oppose This change by giving out energy to increase the temp, the equilibrium shift to the exothermic