1937711
OCR A2 Chemistry Kc
- The magnitude of Kc
indicates the extent of a
chemical reaction
- Kc < 1
- Reaction is reactant favoured
- Reaction is reactant favoured
- Kc = 1
- Position of equilibrium is
halfway between the
reactants and products
- Position of equilibrium is
halfway between the
reactants and products
- Kc > 1
- Reaction is product favoured
- Reaction is product favoured
- Kc < 1
- The affect of temperature change
- When temperature increases
and the forward reaction is
endothermic, Kc INCREASES
- When the temperature increases
and the forward reaction is
exothermic, Kc DECREASES
- When temperature increases
and the forward reaction is
endothermic, Kc INCREASES
- The value of Kc is unaffected by :
- The presence of a catalyst
- Catalysts speed up the rate of
the forward reaction and the
reverse reaction by the same
factor
- Catalysts speed up the rate of
the forward reaction and the
reverse reaction by the same
factor
- Changes in concentration
- Changes in pressure
- The presence of a catalyst
- Kc -
Equilibrium
Constant
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