PS7KEYF07 - Chemistry 391 PS7 KEY 1. a) C2H6(g) C2H4(g) +...

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1 Chemistry 391 Fall 2007 PS7 KEY 1. a) C 2 H 6 ( g ) C 2 H 4 ( g ) + H 2 ( g ) () ( ) 24 2 26 // / CH H P PPP P K PP × = DD D The partial pressure of each component, P i , is P i = x i P total and P total = 1 bar. By definition, P ° = 1 bar. 0.26 0.26 0.1408 0.48 P K × == ( ) ( ) 3- 1 -1 -1 18 11 b) ln 1000 K 298.15 K 1000 K 298.15 K 137.0 10 J mol 1 1 ln 298.15 K 1000 K 40.75 8.314 J mol K 1000 K 298.15 K 298.15 K 2.00 10 reaction P H KK R K Δ ⎛⎞ =− ⎜⎟ ⎝⎠ × =+ × = D It is small compared with the 1000 K value. As the temperature decreases the effect of entropy is lessened and the equilibrium shifts toward the (one) reactant side. c) ln reaction P GR T K Δ= D ( ) -1 -1 -1 298.15 K 298.15 K 40.75 101 kJ mol reaction G × × = D
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2 2. a) 195.41 K, 1050 Pa single phase gas b) 195.41 K, 6077 Pa triple point: gas, liquid, solid c) 237.51 K, 101325 Pa single phase liquid d) 420 K, 130 × 10 5 Pa single phase supercritical fluid e) 190 K, 6077 Pa single phase solid
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3 3. a) p =2 for the two phases, liquid and vapor.
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This note was uploaded on 07/25/2008 for the course CEM 391 taught by Professor Cuckier during the Fall '08 term at Michigan State University.

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PS7KEYF07 - Chemistry 391 PS7 KEY 1. a) C2H6(g) C2H4(g) +...

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