Le Chatelierprinciple

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Le Chatelierprinciple

  1. 1. Le C hàtel ier’s Princible <ul><li>İZMİR INSTITUTE OF TECHNOLOGY </li></ul><ul><li>DEPARTMENT OF CHEMISTRY </li></ul><ul><li>Urla,35340,İZMİR </li></ul><ul><li>APRIL , 2008 </li></ul>
  2. 2. <ul><li>What is the Le C hàtel ier’s Princible about? </li></ul><ul><li>How can equilibrium be affected? </li></ul><ul><ul><ul><li>Changing the pressure </li></ul></ul></ul><ul><ul><ul><li>Adding or removing rectent or product </li></ul></ul></ul><ul><ul><ul><li>Changing the temperature </li></ul></ul></ul><ul><li>Effects of catalyst and addıtıon an ınert gas at constant volume </li></ul>
  3. 3. What is the Le C hàtel ier’s Princible about? <ul><li>States tending to remove the stress and return to equilibrium </li></ul>
  4. 4. Changing the Temperature <ul><li>3H 2 (g)+N 2 2NH 3 +heat </li></ul><ul><li>Increasing the temperature shifts a reaction in a direction that produces an endothermic change </li></ul><ul><li>Decreasing the temperature shifts a reaction an a direction that produces an exhothermic change </li></ul>
  5. 5. Adding or Removing Reactant or Product <ul><li>Being proceed in a direction that partially consumes a reactant or product that is added or partially replaces a reactant or product that is removed. </li></ul><ul><li>Cu(H 2 O) 4 2+ (aq) +4Cl - (aq) CuCl 4 2- (aq) +4H 2 O </li></ul><ul><li>(blue) (yellow) </li></ul>
  6. 6. Changing the Pressure <ul><li>Increasing the pressure,by reducing the volume,drives a reaction in the direction of the fewer number of moles of gas . </li></ul><ul><li>No effect on equilibria involving solids an liquids by changing pressure. </li></ul>
  7. 7. Effects of Catalyst and Addıtıon an Inert Gas at Constant Volume <ul><li>No effect on eqilibrium in a system by catalysts. </li></ul><ul><li>No effects on eqilibrium in a system by </li></ul><ul><li>addition an inert gas. </li></ul>
  8. 8. Referencess <ul><li>Petrucci,Harwood,Herring-GENERAL CHEMISTRY;8 th edition </li></ul><ul><li>Braddy and Hollum –CHEMİSTRY;2 nd edition </li></ul>

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