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Earth and Atmospheric Sciences
Geochemistry and Biogeochemistry
Aqueous Geochemistry
1. Introduction to Aqueous Geochemistry
2. Fundamental Principles
3. Acid-Base Equilibria
4. Mineral-Water Interactions
5. Oxidation-Reduction (Redox) Reactions
6. Complexation and Speciation
7. Sorption Processes at Solid-Water Interfaces
8. Geochemistry of Natural Water Systems
9. Isotope Geochemistry in Aqueous Systems
10. Environmental and Applied Aqueous Geochemistry
11. Geochemical Modeling
Fundamental Principles
Properties of Water
Molecular Structure and Polarity
Geometry of the Water Molecule
Dipole Moment
Electronic Structure
Hydrogen Bonding
Nature and Strength of Hydrogen Bonds
Effects on Water Properties
Temperature Dependence
Solvent Properties
Solvation of Ions and Molecules
Dielectric Constant
Hydration Shells
Ion-Dipole Interactions
Physical Properties
Density and Anomalies
Viscosity
Heat Capacity and Thermal Conductivity
Surface Tension
Vapor Pressure
Chemical Thermodynamics
Gibbs Free Energy
Definition and Significance
Relationship to Spontaneity
Standard States
Enthalpy and Entropy
Enthalpy Changes in Reactions
Entropy and Disorder
Temperature Effects
The Law of Mass Action
Expression for Chemical Equilibria
Application to Aqueous Systems
Equilibrium Constants
Definition and Calculation
Dependence on Temperature and Pressure
Standard State Conventions
Temperature and Pressure Effects on Equilibrium
Le Chatelier's Principle
Van't Hoff Equation
Pressure Effects on Equilibria
Chemical Kinetics
Reaction Rates and Rate Laws
Order of Reaction
Rate Constants
Elementary vs. Complex Reactions
Activation Energy
Arrhenius Equation
Temperature Dependence
Transition State Theory
Catalysis and Inhibition
Homogeneous Catalysis
Heterogeneous Catalysis
Enzymatic Catalysis
Inhibitory Effects
Residence Time
Definition and Calculation
Significance in Natural Waters
Relationship to Reaction Extent
Units of Measurement
Concentration Units
Molarity and Molality
Mass and Mole Fractions
Parts per Million and Parts per Billion
Partial Pressure
Definition and Role in Gas Exchange
Henry's Law Applications
Activity and Activity Coefficients
Concept of Activity
Activity Coefficient Models
The Debye-Hückel Equation
Extended Debye-Hückel Equation
Davies Equation
Pitzer Equations
Limitations and Applicability
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1. Introduction to Aqueous Geochemistry
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3. Acid-Base Equilibria