Equilibrium Flashcards
what happens when you reach equilibrium?
The concentration or rates of opposing processes of each element is the same. I.e macroscopic properties are the same
Do equilibrium reactions stop?
No
what is a closed system?
where the reactants and products can’t escape
Define Le Chatliers principle
if the system in equilibrium is disturbed to position of equilibrium is moved so that the disturbance is removed
what happens When the proportion of product is increased?
the equilibrium position is mood right or forward
what happens when the proportion of reactants increased?
the equilibrium position moves left or backwards
what happens when you increase concentration?
the equilibrium position will move to reduce The concentration
if there are a different number of molecules on both sides of the equation will change in pressure affect equilibrium position ?
yes
if there is an equal number of molecules on both sides of the equation, will a change in pressure affect equilibrium position?
No
what effect does increasing temperature of an endothermic reaction have on the equilibrium position?
The position shifts right
what effect does decreasing temperature of an endothermic reaction have on the equilibrium position?
the position shifts left
what effect does decreasing temperature of an exothermic reaction have on the equilibrium position?
The position shifts right
what effect does increasing temperature of an exothermic reaction have on the equilibrium position?
The position shifts left
how do catalysts affect equilibrium position?
They don’t. They lower activating energy but the equilibrium position is the same.
What does a +ve delta H show?
Heat is given out (exothermic reaction)
What does a -ve delta H show?
Heat is taken in (endothermic reaction)
Define dynamic equilibrium
Where the composition of a reaction mixture does not change due to both forwards and backwards reactions proceeding at the same rate.
