Factors affecting chemical equlibrium

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Factors affecting chemical equlibrium

  1. 1. Factors affecting chemical equilibrium. Sunday, 04 March 2012
  2. 2. DYNAMIC EQUILBRIUM A + B CWhen substances A and B are mixedthey react to form a substance Cuntil a stable fixed concentration ofthe three substance exists.At that stage the reactions continuebut the concentrations do not changeunless the conditions change
  3. 3. In the following slides the effects of changing the concentration, temperature and pressure (gases only) are shown – the red andblue arrows show which way theequilibrium moves as a change is put into effect.
  4. 4. CONCENTRATION EFFECTA + B C ADD MORE ADD MORE
  5. 5. CONCENTRATION EFFECTA + B C REMOVE REMOVE
  6. 6. TEMPERATURE EFFECTA + B C + (HEAT)ADD HEAT REDUCE HEATEXOTHERMIC ENDOTHERMIC
  7. 7. PRESSURE EFFECT A(g) + B(g) C(g)2 gas molecules 1 gas moleculeADD PRESSURE REDUCE PRESSURE ONLY APPLIES TO GASES

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