# Equilibria AQA

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What would a generalised equation for equilibiria look like?
mA + nB --> pC + qD
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What would this equation look like in respect to kc/equilibria constant?
kc= [C]p [D]q / [A]m [B]n
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How do you calculate the moles of reactant at equilibrium?
Initial moles - moles reacted
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How do you calculate the moles of product at equilibrium?
Initial moles + moles formed
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Does temperature have an effect on 'kc'?
Yes
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Does concentration have an effect on 'kc'?
No
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Does pressure have an effect on 'kc'?
No
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Does having a catalyst effect 'kc'?
No
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If you have a larger kc, will you have a greater amount of reactants or products?
Products
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If kc is small, will equilibrium favour the reactants or products?
Reactants
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Does temperature have an effect on equilibrium?
Yes
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If temperature increases, which direction will equilbirum shift?
In the endothermic direction
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If equilbrium shifts to the reactants, what will happen to kc and why?
kc will decrease as there are fewer products
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Does pressure have an effect on equilibrium?
Yes
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If pressure increase, which direction will the reaction shift?
It will shift to oppose the change and move to side with fewer moles. Whilst kc stays the same.
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Does having a catalyst effect equilibrium?
No. It doesn't have an effect.
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Why does having a catalyst not effect the equilibrium nor the value of kc?
As a catalyst speeds up both forward and backward reaction rates equally.
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## Other cards in this set

### Card 2

#### Front

What would this equation look like in respect to kc/equilibria constant?

#### Back

kc= [C]p [D]q / [A]m [B]n

### Card 3

#### Front

How do you calculate the moles of reactant at equilibrium?

### Card 4

#### Front

How do you calculate the moles of product at equilibrium?

### Card 5

#### Front

Does temperature have an effect on 'kc'?