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Finding the Value of Kc

AQA AS-level ChemistryEquilibriaLesson 13 of 20

To calculate the equilibrium constant, the concentrations of the reactants and products at equilibrium must be known. For example for the following equilibrium:

H2(g) + I2(g) &rlhar 2HI (g)

the equilibrium concentrations are

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Key terms in this lesson

Equilibrium constant
A value, Kc, that expresses the relative concentrations of products and reactants at equilibrium for a reaction.

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