Water Quality Modelling: Thermodynamics and Equilibrium

This lecture covers the revision of thermodynamics, PHREEQC keywords, and terminology related to water quality modelling. It explains the Gibbs Phase Rule, reaction types, and examples like the triple point of water. The lecture also delves into enthalpy, reaction constants, and the calculation of activity coefficients. It discusses the Debye-Hückel theory, Gibbs free energy, and the mass action equation. Furthermore, it explores the temperature and pressure dependencies of reactions, as well as the density of water and seawater in different conditions.