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Topic 17 Equilibrium HL

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17.1 Solve homogeneous equilibrium problems using the expression for Kc.

Understandings:
Le Châtelier’s principle for changes in concentration can be explained by the equilibrium law.
Applications and skills:
Solution of homogeneous equilibrium problems using the expression for Kc.

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This video covers how to calculate the equilibrium concentrations of reactants and products when given the equilibrium constant and the initial concentrations. 

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17.1 Equilibrium and Gibbs free energy 

Understandings: 
The position of equilibrium corresponds to a maximum value of entropy and a minimum in the value of the Gibbs free energy.
The Gibbs free energy change of a reaction and the equilibrium constant can both be used to measure the position of an equilibrium reaction and are related by the equation, ∆G° = −RT lnk 
Applications and skills:
Relationship between ∆G and the equilibrium constant.
Calculations using the equation  ∆G° = −RT lnk 

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