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Equilibrium constant Kc



Equilibria & Le Chatelier

AQA Content

construct an expression for Kc for a homogeneous system in equilibrium
calculate a value for Kc from the equilibrium concentrations for a homogeneous system at constant temperature
perform calculations involving Kc
predict the qualitative effects of changes of temperature on the value of Kc

Specification Notes

The equilibrium constant Kc is deduced from the equation for a reversible reaction.
The concentration, in mol dm–3, of a species X involved in the expression for Kc is represented by [X]
The value of the equilibrium constant is not affected either by changes in concentration or addition of a catalyst.



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