- Use the magnitude of K to justify if a reaction favors the products or reactants at equilibrium
- K >1 products (forward reaction) are favored at equilibrium; more products than reactants
○ If K is VERY large, reaction goes essentially to completion
■ Note: in order for the system to be in dynamic equilibrum, molarity or partial pressure of the limiting reactant will be very small BUT not zero
- K < 1 reactants (reverse reaction) are favored at equilibrium; more reactants than products
○ If k is very small, reaction barely proceeds at all (“not occurring”)