03 - Chem 204 Lecture 3 Solutions typically mix element or...

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Chem 204±Lecture 3 Solutions±typ ica l ly mix element or compound into a pure liquid; not applicable to gases; for solids, solutions exist (metal alloy). Solute±component added to liquid ± solvent. Examples: Gas in liquid ± HCl(aq) Liquid in liquid±C 2 H 5 OH in H 2 O; CCl 4 in C 6 H 6 Solid in liquid±NaCl in H 2 O; C 10 H 8 in C
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Lecture 3 ±page 2 How can we quantify solutions? Measuring amount of solute in solvent! Molarity±molar concentration: moles of solute per 1 L of solution. Mole fraction ± moles of solute/(moles of solute + moles of solvent). Molality±mo les of solute/kg of solvent. How is molarity unique from mole fraction and molality? Density depends on temperature Molarity varies with
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±page 3 Solubility ± s Ł molar concentration for a saturated solution (maximum concentration, as solution is in equilibrium with solute). Do you expect solubility to be temperature
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This note was uploaded on 11/19/2010 for the course CHEM 204 taught by Professor Gruebele during the Spring '08 term at University of Illinois, Urbana Champaign.

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03 - Chem 204 Lecture 3 Solutions typically mix element or...

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