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Chemistry
Fundamental Chemistry
Physical Chemistry
1. Foundational Concepts for Physical Chemistry
2. Thermodynamics
3. Quantum Chemistry
4. Molecular Spectroscopy
5. Statistical Mechanics
6. Chemical Kinetics
7. Condensed Matter and Surface Chemistry
Statistical Mechanics
Fundamental Concepts
Microscopic vs Macroscopic Descriptions
Molecular Level Properties
Bulk Properties
Microstates and Macrostates
Definition and Examples
Counting Microstates
Degeneracy
Statistical Ensembles
Microcanonical Ensemble (N, V, E)
Canonical Ensemble (N, V, T)
Grand Canonical Ensemble (μ, V, T)
Isobaric-Isothermal Ensemble (N, P, T)
The Ergodic Hypothesis
Time Averages vs Ensemble Averages
Probability Distributions
The Boltzmann Distribution
Derivation from Maximum Entropy
Applications to Energy States
The Partition Function
Canonical Partition Function (Q)
Physical Interpretation
Calculation Methods
Molecular Partition Function (q)
Relationship to Q for Independent Particles
Factorization into Translational, Rotational, Vibrational, and Electronic Parts
Translational Partition Function
Three-Dimensional Translation
Temperature and Volume Dependence
Rotational Partition Function
Linear Molecules
Nonlinear Molecules
High and Low Temperature Limits
Vibrational Partition Function
Harmonic Oscillator Model
High and Low Temperature Limits
Characteristic Vibrational Temperature
Electronic Partition Function
Ground State Dominance
Excited Electronic States
Thermodynamic Properties from Statistical Mechanics
Internal Energy
Relationship to Partition Function
Contributions from Different Modes
Heat Capacity
Constant Volume Heat Capacity
Contributions from Translation, Rotation, and Vibration
Entropy
Statistical Definition
Sackur-Tetrode Equation
Helmholtz and Gibbs Energies
Relationships to Partition Functions
Pressure and Chemical Potential
Statistical Mechanical Expressions
Applications of Statistical Mechanics
Ideal Gases
Monatomic Gases
Diatomic Gases
Polyatomic Gases
Heat Capacity Calculations
Temperature Dependence
Classical vs Quantum Behavior
Chemical Equilibrium
Equilibrium Constants from Partition Functions
Temperature Dependence
The Equipartition Theorem
Classical Limit
Quantum Corrections
Applications and Limitations
Phase Transitions
Order-Disorder Transitions
Ising Model
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6. Chemical Kinetics