euilibrium Flashcards
definition of dynamic equilibrium
rate of forward and reverse reaction is equal. concentration of reactant and products is constant
effect of increased temp or rate
rate increase
more ke and successful collisions per second
effect of increased temp of equilibrium
shifts to favour endothermic reaction
effect of increased pressure on rate
rate increases
more collisions per second
effect of increased pressure on equilibrium
equilibrium shifts to side of fewer gas moles
Kc equation
2A + B = 2C + D
[C]^2[D] ÷ [A]^2 [B]
Kc units
Write units on top and bottom
Cancel
Invert powers if there are more units under the line
Do nothing if there are more units on the top
Why don’t you include solids in Kc
Solid concentrations remain constant
Total pressure definition
Total pressure in a reaction is the sum of all of the pressures of the individual gases (partial pressure)
How will a shift of equilibrium to the right effect Kc
Increase
How change in temp effects Kp
Kp is only valid for one temperature
Change in temp will change equilibrium pressures, so change Kp
How does concentration affect Kc
It does not
Catalyst effect ok Kc
Catalyst have no effect on value of Kc
Catalyst speeds the forward and reverse reaction
Catalyst speeds up the rate at which equilibrium is established
