Chapter 16: Thermodynamics 16.1 SpontaneitySpontaneityDispersal of Matter and EnergySummary 16.2 EntropyEntropyEntropy and MicrostatesPredicting the Sign of ΔSSummary 16.3 The Second and Third Laws of ThermodynamicsThe Second and Third Laws of ThermodynamicsThe Second Law of ThermodynamicsThe Third Law of ThermodynamicsSummary 16.4 Free EnergyFree EnergyWhat’s “Free” about ΔG?Calculating Free Energy ChangeFree Energy Changes for Coupled ReactionsTemperature Dependence of SpontaneityFree Energy and EquilibriumSummary