Equilibrium Flashcards
Kc =
[products]^mol / [reactants]^mol
Kc value is constant. Only dependent on
Temperature
Kc units
Kc = [mol dm-3]^∆n
Kp = (in terms of Kc Kx and Kn)
Kp = Kc (RT)^∆n
Kp = Kx (RT/V)^∆n
Kp = Kn (P/N)^∆n
If ∆n = 0 then
Kp = Kc
Kp = Kx
Kp = Kn
If n prod > n reactant (pos) then
Kp > Kc
Kp > Kx
Kp > Kn
When n prod < n reactant
Kp < Kc
Kp < Kx
Kp < Kn
If Kc large it means
If Kc small it means
Large Kc means more products (forward reaction favored)
Small Kc means more reactants (forward reaction not favored)
If Kc > Qc then
Forward reaction
Qc =
Qc = Pc / Rc
(Quotient = Product / Reactant)
Pressure effect
Inc in pressure means equilibrium shifts to side with less moles
Ice <—> Liquid when pressure increases
Ice to liquid (forward) preferred
Ice has more volume and liquid has less volume
Ef > Er =
Ef < Er =
Ef > Er = endo
Ef < Er = exo (Rexo)
Ksp =
[cation] [anion]
Ksp is proportional to
Temperature and solubility
