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Summary EDEXCEL A LEVEL CHEMISTRY UNIT 11 EQUILIBRIUM II £2.99
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  3. PEARSON (PEARSON)
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  5. Chemistry 2015
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  7. Unit 11 - Equilibrium II

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Summary EDEXCEL A LEVEL CHEMISTRY UNIT 11 EQUILIBRIUM II
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I created these notes throughout y12&13 and used them for my A level 2022 exams. I got a grade 9 in GCSE and an A* at a level. These notes were made using the CGP revision guide, edexcel textbook and class notes in order to cover everything in the course. I have also added markschemes from past pap...

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  • August 22, 2022
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  • 2021/2022
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11.1 REVERSIBLE REACTIONS & DYNAMIC
EQUILIBRIUM
19 November 2021
17:52
Dynamic equilibrium - Forwards and backwards reactions occur at constant rates and
so there is no overall change.



11.2 THE EQUILIBRIUM LAW
19 November 2021
18:05




● Homogeneous systems.
In hetrogeneous equilibrium, solids and pure liquids aren't expressed in the Kc
expression as their concentrations stay constant.

The equilibrium constant can also be calculated from experimental data.
A mixture will eventually lead to equilibrium.
● Samples can be titrated to find the equilibrium concentration.



11.3 GASEOUS EQUILIBRIA
19 November 2021
19:59
Partial pressure - Pressure that the gas would exert if it were the only gas present in
the container.
● The sum of individual partial pressures is the total pressure.

The moles of gas determines the pressure.
● Partial pressure is proportional to the concentration of gas in the mixture.
A mole fraction is the proportion of a particular gas in a gas mixture.
● Total pressure is shared between gases according to their mole fractions.

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