01:160:161 Lecture Notes - Partial Pressure, Ethylene Glycol, Gas Constant

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25 Jan 2014
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E-mail: students should have received my e-mail, if you haven"t, let me know by e-mail, make corrections/additions to passed-around sheets, especially your e-mail addresses, add/delete your e-mail addresses throughout semester. There are errors in the following students" e-mail addresses. Chapter 13: types of solutions, energetics of solutions. %, m, m, x, ix, ppm, etc: equilibrium in solution formation, the solubilities of gases. Physical properties of solutions: solutions of electrolytes, colloids. Et: molarity is temperature dependent, but molality is not. Difficult but important interconversion mlsolute + mlsolvent mlsolution gsolute + gsolvent = gsolution. Mass percent = grams of solute/100 g solution. Mole percent = moles of solute/100 moles solution. Volume percent = volume of solute/100 ml of solution. %; e. g. , 2 x 40 ml ethanol/100 ml solution = 80 proof ethanol. Mole fraction: xa = na/(na + nb) van"t hoff factor, i ; i = moles of particles in solution/moles of solute dissolved.

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