AP Chemistry / Unit 9: Thermodynamics and Electrochemistry
9.5 Free Energy and Equilibrium
Notes
$$\Delta G^\circ=-RT\ln K$$
- $\Delta G^\circ<0$ ↔ $K>1$; $\Delta G^\circ>0$ ↔ $K<1$.
Practice
$\Delta G^\circ<0$ means:
Products favored.
$K=1$ means $\Delta G^\circ=$
$\ln1=0$.
A reaction with $\Delta G^\circ=+20$ kJ/mol at equilibrium has:
$K<1$.
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