PPT-3.5 Chemical Equilibrium

Intended Student Learning Must be able to describe the dynamic nature of a chemical system at equilibrium Must be able to write K c expressions that correspond to given reaction equations Perform calculations involving . MICROECONOMICS. Principles and Analysis. . Frank Cowell . Almost essential . A Simple Economy. Useful, but optional. Firm: Optimisation. Consumer Optimisatio. n. Prerequisites. July 2015. 1. Note: the detail in slides marked “ * ” can only be seen if you run the slideshow. Rôle. of Prices. MICROECONOMICS. Principles and Analysis. . Frank Cowell. Almost essential . General equilibrium: Basics. Useful, but optional. General Equilibrium: Price Taking. Prerequisites. July 2015. Dr. Ron Rusay. © Copyright 2003-2010 R.J. Rusay. Chemical Equilibrium. The reactions considered until now have had reactants react completely to form products. These reactions “went” only in one direction.. Bruce Herbert. Geology & Geophysics. Introduction. Geochemical models can predict the concentrations (activities) of species present in a system. . From this data, they can be used to deduce and quantify the chemical and biologic processes that affect the fate and transport of pollutants in soils and aquifers. . Graph of Gradual Evolution. http://anthro.palomar.edu/synthetic/images/graph_of_phyletic_gradualism.gif. Some biologists claim that most evolutionary change takes place as a result of a series of very small changes . What’s . New here?. . Incomplete information: . Example: . Battle of the sexes . game,But. Bob . doesn’t know . what Alice wants . (i.e. her payoffs from possible outcomes). In previous examples we had “. Author: Wesley Tung. Technical Things. A chemical equation of a reaction uses mole ratios to describe the production of products from reactants.. In . , hydrogen and oxygen are reactants, and water is a product.. At equilibrium, the number of. people riding up the lift and the. number of people skiing down . the slope . are constant.. Learning Goal . Calculate the equilibrium constant for a reversible reaction given the concentrations of reactants and products at equilibrium.. E-mail: . benzene4president@gmail.com. Web-site: http://clas.sa.ucsb.edu/staff/terri/. Chemical Equilibrium – Ch. 6. 1. Consider the following reaction: . N. 2. (g) 3 . H. 2. (g) . ⇌ . The State of Chemical Equilibrium. Chemical Equilibrium. : The state reached when the concentrations of reactants and products remain constant over time.. 2 NO. 2. (. g. ). N. 2. O. 4. (. g. ). Brown. Calculating . D. G. o. as a State . Function.. Solving . D. G. o. Using Hess’s . Law.. Using . the following data (at . 25. o . C). C. diamond. (s. ) + O. 2. (g) . . CO. 2. (g) . D. G. . Scalars and vectors. . Types of forces. . Resultant of forces. . Equilibrium of particles. Scalar and Vectors. . Scalar - . a physical quantity that is completely described by a real number. . When the rates of the forward and reverse reactions become equal, the concentrations of the reactants and the products remain constant. This is the stage of chemical equilibrium. This equilibrium is . The Meaning of K. . K > 1 . . the equilibrium position is far to the right . K < 1 . . the equilibrium position is far to the left . The value of . K. for a system can be calculated from a known set of equilibrium concentrations. .