CHEM 001 Lecture Notes - Lecture 28: Isothermal Process, Partial Pressure, Amorphous Solid
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13 Aug 2020
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Solubility factors: raoult"s law vs. henry"s law. A. raoult"s law is more accurate when looking at the vapor partial pressure of a solvent with high concentration; think pv = B. henry"s law is more accurate when looking at the vapor partial pressure of a volatile solute where the solute has a low concentration; think c = ka1pv and pv = aka2. C. summary: in an ideally dilute solution: When solvent concentration is high, its surrounded by other solvent molecules. This makes it so it behaves more like a pure solvent. Thus the solvent vapor partial pressure is proportional to its vapor pressure as a pure liquid; raoult"s law! When the volatile solute concentration is low, its surrounded by solvent molecules, creating a . Deviation from the behavior of the pure volatile solute. Thus, the volatile solute vapor partial pressure is not proportional to its vapor pressure as a pure substance (i. e. , raoult"s law does not work here) .
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