Equilibrium - 7, 17

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Equilibrium requistes

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8 Terms

1

Equilibrium requistes

  1. has to be a reversible reaction

  2. must occur in a closed system

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2

4 key features of a reaction at equilibrium

  1. forward & backward reactions occur at the same rate

  2. concentration of reactant & product particles remain at equilibrium constant

  3. requires a closed system where only energy can be transferred

  4. no change in macroscopic properties e.g. pH, colour, pressure

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3

if value of Kc is larger

forward reaction favoured

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4

Le Chat Principle (3)

  1. system tends to reestablish equilibrium

  2. by altering concentration

  3. to minimise change

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5

If Reactants added

forward reaction will be favoured, Kc unchanged

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6

Change to pressure

equilibrium shifts to the side with less particles

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7

More pressure in the Haber Process

encourages forward reaction as particles are 4 : 2 causing equilibrium to move to the right

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8

Lowering temperature in the Haber Process

encourages the forward reaction

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