CHEM 1050 Chapter : Thermodynamics and Equilibirum

• School: University of Guelph
• Department: Chemistry
• Course: CHEM 1050
• Professor: Dennis Baker

Document Summary

Thermodynamics is the study of the relationship between heat and other forms of energy involved in a chemical or physical process. Note: the change in enthalpy equals the heat of reaction at constant pressure. First law of thermodynamics: essentially the law of conservation of energy applied to thermodynamic systems. Internal energy (u): the sum of the kinetic and potential energies of the particles making up the system. The kinetic energy includes the energy of motion of elections, nuclei, and molecules. The potential energy results from the chemical bonding of atoms and from the attractions between molecules. Internal energy is a state function: a property of a system that depends only on its present state, which is completely determined by variables such as temperature and pressure. When a system changes from one state to another, its internal energy changes from one definite value to another.