1. Free Energy and Equilibrium
Pressures and concentrations

2. G = Go + RTln(Q)
Reaction quotient
Q = [products]
[reactants] Or
= P products
P reactants
If G is more negative than the Go, then the process is more spontaneous.
Free energy change at current pressure
J/(mol K)
Needs to be in kJ
Standard free energy change at 1 atm

3. Free energy and Equilibrium
Go = - RTln(K) Case 1 Go = 0 then at eq Case 2 Go < 0 Goproducts < Goreactants shift right K > 1 Case 3 Go > 0 Goreactants < Goproducts Shift left K < 1

4. Calculating K from Ho, So values
1st find Go from Go = Ho - TSo 2nd solve for K from Go = - RTln(K) Algebra
Make sure
Put in (-)
Units match J and kJ
2nd ln

5. Temperature dependence of K
Go = - RTln(K) = Ho – TSo Solve for lnK, by testing your algebra skills Y = m x + b