Dynamic equilibrium & le Chatelier’s principle Flashcards
1
Q
when does a dynamic equillibrium occur?
A
- in a closed system
- when the rate of the forward reaction is equal to the rate of the reverse reaction
- and the concentrations of reactants and products do not change
2
Q
why do the concentrations of reactants and products not change?
A
as fast as reactants are becoming products, products are becoming reactants
3
Q
why must equilibrium reactions be closed systems?
A
so that temp, pressure and concentration aren’t influenced by outside variables
4
Q
what is le chatelier’s principle?
A
when a system in equilibrium is subject to external change, the system readjusts to minimise this change
5
Q
what is a reversible reaction?
A
reactions which take place in forward and backward directions
