CHM ENG 140 Study Guide - Midterm Guide: Phase Rule, Antoine Equation, Phase Diagram
8 Jan 2019
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Complete sentences are unnecessary. a) give two real world examples of processes that use multiple phases to separate mixtures of components. Correct answers include: distillation; liquid extraction; crystallization; gas absorption. Correct answers include: antoine equation; clausius-clapeyron equation; tabulated data; p-t phase diagram: write the gibbs phase rule, define each variable in the equation, and give an example of a system in which there is one degree of freedom. Df (degrees of freedom) = 2 + c (# components) - (# phases) System should have one component, two phases (or two components, three phases), e. g. water at vapor-liquid equilibrium: air and water are present in a two-phase system in which the liquid phase is entirely composed of water. Raoult: y water p = x water p* water (t) and x water = 1, so y water = p* wate (t) r /p y air = 1 - y water = 1 - p* water (t)/p.
