TAILIEUCHUNG - Environmental Chemodynamics

List the thermodynamic functions used to describe the energy status of molecules in an environmental system. • Understand the relationship of Gibb’s free energy and chemical potential in the transfer or transformation of chemicals in a system. • Develop a basic understanding of fugacity and its role in environmental transformations. • Define activity and its relationship to concentration. | Environmental Chemodynamics Principles of Environmental Toxicology Instructor Gregory Möller . University of Idaho Principles of Environmental Toxicology Learning Objectives List the thermodynamic functions used to describe the energy status of molecules in an environmental system. Understand the relationship of Gibb s free energy and chemical potential in the transfer or transformation of chemicals in a system. Develop a basic understanding of fugacity and its role in environmental transformations. Define activity and its relationship to concentration. 2 Principles of Environmental Toxicology Learning Objectives 2 Understand the concept of energy bookkeeping and the relationship of Gibb s free energy to enthalpy and entropy in an phase transformation or chemical reaction. Develop a basic understanding of first order and psuedo-first order chemical kinetics including integrated rate expressions half-lives and T dependence. 3 Principles of Environmental Toxicology Learning Objectives 3 Understand the compartment model of the ecosphere. Understand the partitioning of chemicals and how partition constants are used in describing environmental systems. Understand the basic approaches to modeling chemodynamics and the usefulness and limitations of model use. 4 Principles of Environmental Toxicology Environmental Chemodynamics Thermodynamics and kinetics of processes are important in a description of the fate and transport of environmental chemicals. - Dynamics and energy balance drive the system. - Phase transfer and chemical reaction dynamics. - Interfacial and inter-compartment transport. Principles of Environmental Toxicology Thermodynamics The study of systems at equilibrium. - Reversible processes. Used to describe the energy status of molecules in an environmental system. Thermodynamic functions. -Chemical potential g. - Fugacity . - Activity coefficient a. - Gibbs free energy G. - Enthalpy H. - Entropy S. 6 1 Principles of Environmental Toxicology Chem. .

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