equilibrium constant Kp Flashcards
1
Q
what is Kp?
A
the equilibrium constant for an equilibrium reaction involving gases
2
Q
what is the Kp expression?
A
p(G)g x p(H)h / p(E)e x p(F)f
3
Q
what is le chatelieur’s principle?
A
if a reaction at equilibrium is subject to change in pressure, temperature or concentration, the equilibrium position shifts to counteract this
4
Q
what effect does temperature have on the position of equilibrium?
A
increasing temperature shifts in the endothermic direction
5
Q
what effect does pressure have on Kp?
A
nothing
6
Q
what effect does concentration have on Kp?
A
nothing
7
Q
what effect does temperature have on Kp?
A
- increase = endothermic
- decrease = exothermic
- if endothermic is forward, Kp increases
- if exothermic is forward, Kp decreases
8
Q
explain in terms of Kp, the effect of increasing reactants on the equilibrium yield of the products
A
- if reactants are increased, equilibrium shifts to the products to reduce this
- so shifts to the right
- increases product yield
- Kp not effected by concentration so stays constant
