17.2.1 Solve homogeneous equilibrium problems using the expression for Kc
The Reactant Quotient (Q):
The Reactant Quotient (Q):
- Q is a tool to determine how the system will behave given known concentrations put into the equilibrium constant equation and calculated
- the value of Q isn't necessarily the value at equilibrium
- if Q=Kc, system at equilibrium
- if Q > Kc, need to shift the system left in order to reach equilibrium (need to decrease the concentration of products)
- if Q < Kc, need to shift the system right in order to reach equilibrium (need to increase the concentration of products)