Equilibrium - CHEM 1A Chemical Equilibrium - KEY What is...

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CHEM 1A CLAS F09 Chemical Equilibrium - KEY What is equilibrium? 1. Write equilibrium constant expressions for each of the following a. Na 2 O (s) + SO 2 (g) Na 2 SO 3 (s) b. 2 Cl 2 (g) + 2 H 2 O (g) 4 HCl (g) + O 2 (g) c. 2 Hg 2 O (s) 4 Hg (l) + O 2 (g) d. HF H + + F - e. NH 3 + H 2 O (l) NH 4 + + OH - 2. For the reaction, 2 NO (g) + Cl 2 (g) 2 NOCl (g), at 700 K with a K = 0.26, predict the behavior of each of the following mixtures at 700 K. a) P NO = 0.15 atm P Cl2 = 0.31 atmP NOCl = 0.11 atm b) P NO = 0.12 atm P Cl2 = 0.10 atmP NOCl = 0.050 atm c) P NO = 0.15 atm P Cl2 = 0.20 atmP NOCl = 0.050 atm 3. Consider the following reactions and equilibrium constants (K) @ a certain temperature. 2 NOCl (g) 2 NO (g) + Cl 2 (g) K = 1.6 x 10 -5 2 NO (g) N 2 (g) + O 2 (g) K = 1.0 x 10 31 Each reactant is put in a separate container and allowed to reach equilibrium. Describe the relative amounts of reactants and products at equilibrium in each container. 4. The equilibrium constant for 2 NO (g) + Br 2 (g) 2 NOBr (g) is 1.3 x 10 -2 @ 1000K. Calculate the equilibrium constant for the reverse reaction. At 1000K, does equilibrium favor the reactants or products? 5. At a given temperature in a 3.0 L flask the following amounts are measured once the system has come to equilibrium: 2.4 moles of chlorine gas, 1.0 mol of NOCl and 4.5 x 10 - 3 moles of nitrogen monoxide. Calculate the equilibrium constant for the following reaction: 2 NOCl (g) 2 NO (g) + Cl 2 (g). 6.
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This note was uploaded on 12/23/2009 for the course GEN GEN STUDIE taught by Professor Kellyshonttell during the Fall '09 term at University of Washington.

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Equilibrium - CHEM 1A Chemical Equilibrium - KEY What is...

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