Chemical equilibrium - 3 Flashcards
What does dynamic equilibrium mean
It occurs when the rate of the forward reactions equals the rate of the reverse reaction
What factors are needed to reach dynamic equilibrium
Has to be in a closed system
rate of forward reaction = rate of reverse reaction
what factors can alter equilibrium position
Concentration
Pressure
temperature
explain Le Chateliers Principle
If a system at equilibrium is disturbed the equilibrium moves in the direction that reduces the disturbance
what effect does a catalyst have on equilibrium position
No effect
What condition affects the value of Kc
Only temperature
What does Kc being greater or less than 1 suggest for the position of equilibrium
greater than 1 = favours products
Less than 1 = favours reactants
what does decreasing the temperature in an endothermic reaction have on Kc
Kc decreases
what does increasing the temperature in an endothermic reaction have on Kc
Kc increases
what does decreasing the temperature in an exothermic reaction have on Kc
Kc increases
what does increasing the temperature in an exothermic reaction have on Kc
Kc decreases
