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OCR A2 Chemistry Kc

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A Levels Chemistry Mindmap am OCR A2 Chemistry Kc, erstellt von Sarah H-V am 30/01/2015.
Sarah H-V
Mindmap von Sarah H-V, aktualisiert more than 1 year ago
Sarah H-V
Erstellt von Sarah H-V vor fast 10 Jahre
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Zusammenfassung der Ressource

OCR A2 Chemistry Kc
  1. The magnitude of Kc indicates the extent of a chemical reaction
    1. Kc < 1
      1. Reaction is reactant favoured
      2. Kc = 1
        1. Position of equilibrium is halfway between the reactants and products
        2. Kc > 1
          1. Reaction is product favoured
        3. The affect of temperature change
          1. When temperature increases and the forward reaction is endothermic, Kc INCREASES
            1. When the temperature increases and the forward reaction is exothermic, Kc DECREASES
            2. The value of Kc is unaffected by :
              1. The presence of a catalyst
                1. Catalysts speed up the rate of the forward reaction and the reverse reaction by the same factor
                2. Changes in concentration
                  1. Changes in pressure
                  2. Kc - Equilibrium Constant

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