![]() There might be decreases in freedom in the rest of the universe, but the sum of the increase and decrease must result in a net increase. The freedom in that part of the universe may increase with no change in the freedom of the rest of the universe. Statistical Entropy - Mass, Energy, and Freedom The energy or the mass of a part of the universe may increase or decrease, but only if there is a corresponding decrease or increase somewhere else in the universe.Qualitatively, entropy is simply a measure how much the energy of atoms and molecules become more spread out in a process and can be defined in terms of statistical probabilities of a system or in terms of the other thermodynamic quantities. Statistical Entropy Entropy is a state function that is often erroneously referred to as the 'state of disorder' of a system.Phase Change, gas expansions, dilution, colligative properties and osmosis. Entropy is a measure of the disorder in a closed system. Simple Entropy Changes - Examples Several Examples are given to demonstrate how the statistical definition of entropy and the 2nd law can be applied.A microstate is one of the huge number of different accessible arrangements of the molecules' motional energy* for a particular macrostate. Instead, they are two very different ways of looking at a system. If the system of gas particles is at equilibrium, then the pressure, the volume, the number of. ![]() ![]() Importantly, entropy is a state function, like temperature or pressure, as opposed to a path function, like heat or work. So remember, n represents moles at a specific pressure, volume, and temperature. Entropy is a measure of how dispersed and random the energy and mass of a system are distributed. And to think about microstates, lets consider one mole of an ideal gas. Thermodynamics deals with the relation between that small part of the universe in which we are interested - the system - and the rest of the universe - the surroundings. ![]() Microstates Dictionaries define “macro” as large and “micro” as very small but a macrostate and a microstate in thermodynamics aren't just definitions of big and little sizes of chemical systems. Instructor The concept of entropy is related to the idea of microstates. Entropy is dynamic - something which static scenes dont reflect.“Disorder” was the consequence, to Boltzmann, of an initial “order” not - as is obvious today - of what can only be called a “prior, lesser but still humanly-unimaginable, large number of accessible microstate it was his surprisingly simplistic conclusion: if the final state is random, the initial system must have been the opposite, i.e., ordered. ‘Disorder’ in Thermodynamic Entropy Boltzmann’s sense of “increased randomness” as a criterion of the final equilibrium state for a system compared to initial conditions was not wrong. ![]()
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