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OCR Chemistry A Level 2015 > Chemical Equilibrium > Flashcards

Flashcards in Chemical Equilibrium Deck (6)
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1

What is dynamic equilibrium?

Exists in a closed system when the rate of the forward reaction equals the rate of the backward reaction, and conc of reactants and products do not change

2

Outline le Chatelier's principle

States when any change is made to conditions of a dynamic equilibrium, POE moves in the direction that minimises the change

3

Will adding or removing a catalyst cause any change to the POE?

No as it would just increase or decrease the rate of both reactions

4

What would happen when increasing temperature of a dynamic equilibrium?

POE move in the direction that absorbs heat so endothermic

5

What would happen when decreasing temperature of a dynamic equilibrium?

POE move in the direction that releases heat so exothermic

6

What would happen when increasing pressure of a dynamic equilibrium?

POE move in the direction that decreases pressure so direction giving fewer gas molecules