Equilibrium (5/9) Flashcards
Equilibrium
Forward rate= reverse rat
reactant and product concentrations are stable
Non-spontaneous reaction
reaction favors reactant
Keq
Equilibrium constant
[products]/[reactants]
The Haber Process
N2 + 3H2 –> 2NH3
Kf[Reactants]=Kr[Products]
Keq when favoring a side has a…
value >1 for products
value <1 for reactants
What states of matter does Keq include?
gases
Facts about Keq
Non concentration dependent
catalysts change kinetics but not equilibrium
Keq expression for reverse
Keq=[reactants]/[products]
or 1/Keq forward
-inverse relationship
Reaction quotient
Concentrations can be from any point in reaction, not just equilibrium
Q>Keq
too many products
Q
Too many reactants
La Chatelier principle
When changing concentration of one reactant, the other one may compensate. So, changing concentrations will not change Keq, just change the math that gets us the Keq
When removing product…
It will increase the yield because the reaction is working harder to replenish the product
ASA Synthesis
Add excess reactants or take away the product
Relationship of pressure and volume in Le Chat principle
Increasing volume= decrease pressure
and vise versa
