GEOL 250 Study Guide - Final Guide: Thermodynamic Equilibrium, Equilibrium Thermodynamics, M.I. High

• School: College of Charleston
• Department: Geology and Environmental Geosciences
• Course: GEOL 250
• Professor: Vulava

Document Summary

Lecture 11: ph buffering in solutions and salts and solubility. Chemical work = energy change during a process. Energy: the capacity to do work or transfer heat. Associated with random motion of atoms and molecules. Can be transformed to another form ex) internal combustion engine, nuclear decay, etc. Portion of the universe that can be isolated and studied. Exchanges mass and heat between system and surrounding. Values in a system are fixed at equilibrium. Always final state value - initial state value. Out of equilibrium means input doesn"t match output. A state in which there is no chemical driving force favoring a change in composition. System will not change unless external forces act upon it. Something has to change for the system to change. Rates of forward and reverse reactions are equal. Reactant into product and product into reactant. Reaction has stopped occurring when reaction is in equilibrium. Concentration of reactants and products remain constant.