OCR A2 Chemistry Kc

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Chemistry Mind Map on OCR A2 Chemistry Kc, created by Lily Schaeffer '23 on 22/02/2020.
Lily Schaeffer '23
Mind Map by Lily Schaeffer '23, updated more than 1 year ago More Less
Sarah H-V
Created by Sarah H-V about 9 years ago
Lily Schaeffer '23
Copied by Lily Schaeffer '23 about 4 years ago
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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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