equilibrium-calculations-handout

equilibrium-calculations-handout - Equilibrium Law...

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Equilibrium Law Calculations (with RICE charts) Example 14.7 - pg. 567 H 2 + I 2 2HI R I C E H 2 I 2 HI R atio, I nitial, C hange, E quilibrium Q - Try PE 9 on pg. 568 • Read 566 (from “Calculating Kc…”) to 568. Follow the sample calculation carefully. PE 9 - pg. 568 PCl 3 + Cl 2 PCl 5 Q - Try 14.38, 14.39 pg. 589 14.9 - pg. 570 CO + H 2 O CO 2 + H 2 CO H 2 OC O 2 11 1 0.100 0.100 0 -x -x +x 0.10 - x 0.10 - x x R I C E H 2 1 0 +x x = 4.06 = [0.10 -x] 2 [x] 2 Kc = [CO 2 ][H 2 ] [CO][H 2 O] x/[0.10-x] = 2.01, x = 0.201-2.01x, 3.01x = 0.201 x=0.0668 Read 570-1. Follow sample calculation carefully. PE 11, 14.40, 14.41 pg. 589 (notice [ ] for 14.41) Equilibrium calculations when Kc is very small • Thus far, problems have been designed so that the solution for x is straightforward • If the problems were not so carefully designed we might have to use quadratic equation (or calculus) to solve the problem. • If Kc is very large or very small we can use a
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This note was uploaded on 04/12/2011 for the course CHEM 1010 taught by Professor Marshall during the Spring '11 term at North Texas.

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