CHE102 - Lecture 5

CHE102 - Lecture 5 - Students not registered for CHE 102...

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Students not registered for CHE 102 recitation and lab . As of 5:00 pm, January 21 st . See or email Mrs. Clarke ASAP to be force registered into lab & recitation: pbc@buffalo.edu, NSC 266 Farah, Abdirahman Awil A Chahal, Manish B Larson, Thomas Alan B Ogden, Patricia Ann B Deprinvil, Manoach C Echevarria, Jorge Alberto C Namulala, Robert Masibo C Tarasevich, Sergeo Nichlas C Tevington, Jane Elizabeth C
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Students not registered for CHE 102 lecture . As of 5:00 pm, January 21 st . See or email Mrs. Clarke ASAP to be force registered into lecture C (T Th 5:20 – 6:35): pbc@buffalo.edu, NSC 266 Gu, Henry T3 Kapturowski, Steven James R6 Kenneth, Jeshrun R2
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1. Problem set #2 on Mastering Chemistry . Due Friday (2/1/08) at 7:00 am . 2. New reading: Ch. 14 – Kinetics 3. Recitation and lab check-in begin today!
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Colloid: dispersion of particles in a medium, where the particles are larger than individual molecules (typically 10 2 – 10 6 atoms). How is a colloid different than a solution? How is a colloid different than a heterogeneous mixture? Solution Colloid Heterogeneous mixture How can we visually determine if a mixture is a colloid or solution?
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Ch. 13 Summary… Solution formation a. Entropy – increased disorder b. Enthalpy – favorable intermolecular interactions Concentration a. Mass percent, parts per million b. Mole fraction c. Molality d. Molarity Solubility a. Influence of pressure – Henry’s Law b. Influence of molecular structure – “like dissolves like” c. Influence of temperature Colligative properties a. Vapor pressure – Raoult’s Law b. Boiling point elevation and freezing point depression c. Osmosis Colloids
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Chapter 14 Kinetics
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Thermodynamics Is the reaction favored in the direction written? • Does the reaction “go”?
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CHE102 - Lecture 5 - Students not registered for CHE 102...

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