Equilibrium How Far Flashcards
2 features of a system that is in dynamic equilibrium
rate of forward reaction = rate of backward reaction
concentrations of reactants and products constantly interchanging
what is Le Chatelier’s principle
if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium moves to counteract the change
what happens if you increase pressure
moves position of equilibrium to the side with less moles of gas
what happens if you increase temp
moves in endothermic direction
what is homogeneous equilibrium
everything present in the same phase/state
how to write Kc
include units or (no units)
[C][D]/[A][B]2
only include g compounds
what affects Kc
temperature only
if the temp change means more product is formed what does this do to Kc
Kc will rise
if the temp change means less product is formed what does this do to Kc
Kc will decrease
a Kc of >1 =
equilibrium lies towards products
a Kc of <1 =
equilibrium lies towards reactants
what is heterogeneous equilibrium
not everything is in the same phase
don’t include any term for a solid in the equilibrium equation
equilibrium involving gases uses what
Kp
done in terms of partial pressures
how to work out mole fraction of gases
number of moles of gas of A/total number of moles of gas
what is partial pressure (Pa)
pressure a gas in a mixture would exert if it alone occupied the container
