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Unformatted text preview: EMA 4314 HW 4 Solutions Discussion Questions 4.1 Chemical potential is the single function that governs phase stability. The phase whose chemical potential is least under a set of given conditions is the most stable. Conditions under which two or more phases have equal chemical potentials are conditions under which those phases are in equilibrium. Understanding how chemical potential varies with physical conditions such as temperature, pressure, and (in later chapters) composition allows one to compute chemical potentials for various phases and to map out the conditions for stability of those phases and for equilibrium between them. 4.4 Refer to Figure 4.1 above and Figure 4.8 in the text. Starting at point A and continuing clockwise on path p ( T ) toward point B, we see a gaseous phase only within the container with water at pressures and temperatures p ( T ). On reaching point B on the vapor-pressure curve, liquid appears on the bottom of the container and a phase boundary or meniscus is evident between the liquid...
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- Fall '10