Chem_208_Lecture_11_BW - NO graphing/text capable...

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1 NO graphing/text capable calculators on 208 exams Prelim 1: Tues Feb 26, 7:30- 9:00PM Ch 7, 14 (PS 1- 4) Today: Ch. 15.1-15.5
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2 Chapter 15: Equilibrium Phase Equilibria : H 2 O (l) H 2 O (g) P H2O = 24 Torr = 0.0316 atm at 25 o C P H2O =150 Torr = 0.197 atm at 60 o C P H2O =760 Torr = 1.00 atm at 100 o C Solvation : NaCl (s) Na + (aq) + Cl - (aq) Sat’d solution: 330 g/liter @25 o C 370 g/liter @50 o C Chemical Reaction : NO 2 (g) + NO 2 (g) N 2 O 4 (g) Δ H = -57.2 kJ/mol K P = P H2O K C = [Na + ][Cl - ] [] [ ] 2 2 4 2 2 2 4 2 C NO O N NO NO O N K = = () 2 NO O N NO NO O N P 2 4 2 2 2 4 2 P P P P P K = = OR
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3 V = 10.0 L CO H 2 CH 3 OH mole s After reaching equilibrium at t e : [ ] [] 5 . 14 ) 0822 . 0 )( 0911 . 0 ( 0.00892 H CO OH H C K 2 2 2 3 C = = =
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4 V = 10.0 L After reaching equilibrium at t e : [ ] [] 4 . 14 ) 151 . 0 )( 0753 . 0 ( 0.0247 H CO OH H C K 2 2 2 3 C = = = CO H 2 CH 3 OH
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5 V = 10.0 L After reaching equilibrium at t e : [ ] [] 5 . 14 ) 176 . 0 )( 138 . 0 ( 0.0620 H CO OH H C K 2 2 2 3 C = = = H 2 CO CH 3 OH
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6 CO(g) + 2H 2 (g) CH 3 OH (g) For ANY initial conditions, after reaching equilibrium at t e : [ ] [] [ ] 5 . 14 H CO OH H C K 2 2 3 C = CO H 2 CH 3 OH CO H 2 CH 3 OH CO H 2 CH 3 OH
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7 A General Expression for K c For the generalized reaction: aA + bB +…. . gG +hH+…. The equilibrium constant in terms of concentration (K c ) is: [ ] [ ] [][] ..... B A .... H G K b a h g C =
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8 Activities make Equilibrium Constants Dimensionless For the generalized reaction: aA + bB +…. . gG +hH+….
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This note was uploaded on 03/29/2009 for the course CHEM 2080 taught by Professor Davis,f during the Spring '07 term at Cornell University (Engineering School).

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Chem_208_Lecture_11_BW - NO graphing/text capable...

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