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Physical Chemistry III
Physical Chemistry III

... o To acquire the foundations and terminology which characterize the thermodynamic chemistry of material balances in terms of state functions. o To apply thermodynamic chemistry to the resolution of significant problems such as energy changes in chemical reactions, phase changes, solutions, chemical ...
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... At the Fifteenth Annual Mathematics Competition Awards Ceremony, held on April 27, 2000, I spoke on entropy as a measure of randomness. Because of the importance and beauty of the ideas in the talk, I am happy to be able to share them with a wider audience. The many faces of entropy form a cluster o ...
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... been investigated and P.W. Anderson, together with N.F. Mott and J.H. van Vleck, won the 1977 Nobel price in physics for “their fundamental theoretical investigations of the electronic structure of magnetic and disordered systems”. The Anderson model corresponds to a single quantum particle within a ...
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... values in simple processes b. use the Thermodynamics principles and functions to analysis simple chemical systems and determine the effect of external conditions on their equilibrium positions. c. demonstrate a better understanding on the fundamental principles of reaction rate theories as well as t ...
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... The value of x will be given as 9.8 x 10-3M to two significant figures. G. The equilibrium concentrations for the reaction will be as follows: [NOCl] = 0.50 – 2x = 0.48 M [NO] = 2x = 2(9.8 x 10-3) = 1.9 x 10-2 M [Cl2] = x = 9.8 x 10-3M H. Selfcheck: Always check calculations by substituting the valu ...
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... The term thermodynamics was coined by James Joule in 1858 to designate the science of relations between heat and power.[1] By 1849, "thermodynamics", as a functional term, was used in William Thomson's paper An Account of Carnot's Theory of the Motive Power of Heat.[9] The first thermodynamic textbo ...
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... applications of the first and second laws to chemical and physical changes. Applications are made to chemical equilibrium, electrochemical cells, and other spontaneous processes. Course Objectives: Upon successful completion of this course the student should be able to: 1. Apply physical chemistry p ...
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... Note that the equilibrium expression can be expressed by concentrations in terms of _________ for aqueous solutions or _________________ for gases (although for the purposes of Chemistry 12, we will not be using partial pressures) Some rules to follow when writing equilibrium expressions: “_________ ...
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Statistical mechanics

Statistical mechanics is a branch of theoretical physics that studies, using probability theory, the average behaviour of a mechanical system where the state of the system is uncertain.The classical view of the universe was that its fundamental laws are mechanical in nature, and that all physical systems are therefore governed by mechanical laws at a microscopic level. These laws are precise equations of motion that map any given initial state to a corresponding future state at a later time. There is however a disconnection between these laws and everyday life experiences, as we do not find it necessary (nor even theoretically possible) to know exactly at a microscopic level the simultaneous positions and velocities of each molecule while carrying out processes at the human scale (for example, when performing a chemical reaction). Statistical mechanics is a collection of mathematical tools that are used to fill this disconnection between the laws of mechanics and the practical experience of incomplete knowledge.A common use of statistical mechanics is in explaining the thermodynamic behaviour of large systems. Microscopic mechanical laws do not contain concepts such as temperature, heat, or entropy, however, statistical mechanics shows how these concepts arise from the natural uncertainty that arises about the state of a system when that system is prepared in practice. The benefit of using statistical mechanics is that it provides exact methods to connect thermodynamic quantities (such as heat capacity) to microscopic behaviour, whereas in classical thermodynamics the only available option would be to just measure and tabulate such quantities for various materials. Statistical mechanics also makes it possible to extend the laws of thermodynamics to cases which are not considered in classical thermodynamics, for example microscopic systems and other mechanical systems with few degrees of freedom. This branch of statistical mechanics which treats and extends classical thermodynamics is known as statistical thermodynamics or equilibrium statistical mechanics.Statistical mechanics also finds use outside equilibrium. An important subbranch known as non-equilibrium statistical mechanics deals with the issue of microscopically modelling the speed of irreversible processes that are driven by imbalances. Examples of such processes include chemical reactions, or flows of particles and heat. Unlike with equilibrium, there is no exact formalism that applies to non-equilibrium statistical mechanics in general and so this branch of statistical mechanics remains an active area of theoretical research.
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