01:160:311 Study Guide - Quiz Guide: Eutectic System, Hydrogen Bond, Structural Isomer
22 Sep 2019
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Why are melting points carried out: characterizes known compound, records physical characteristic of new compound, establishes purity of known compound. Definition of the melting point of a pure compound. Temperature at which (vapor pressure)solid = (vapor pressure)liquid. Examples of impurities that don"t depress melting point. Sand & charcoal are insoluble impurities & will not depress melting point, but widen mr. Define eutectic point (two ways mentioned in notes) and eutectic temperature a. eutectic point i. Lowest point on melting point composition diagram where mixture has very narrow melting range ii. Point at which 2 solids & their liquid solutions are in equilibrium b. eutectic temperature temperature at eutectic point; lowest temp at which mixture at certain concentration starts to melt. Lowest point on melting point composition diagram where mixture has very narrow melting range. Point at which 2 solids & their liquid solutions are in equilibrium. Melting point composition graph how to read and interpret.
