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# AssignmentTwo - 2 O is placed in a 1.0-L vessel where the...

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Take Home Assignment #2 Please turn in neatly worked solutions for the following problems. Answers are due by 4:00 PM on Monday, September 3 rd . These problems provide a review basic equilibrium calculations from Chem 260. All reactions involve gases only and equilibrium constants are defined using partial pressures ( K p ) or concentrations ( K c ). 1. A mixture of CH 4 and H 2 O is passed over a nickel catalyst at 1000 K where the following reaction CH 4 (g) + H 2 O (g) CO (g) + 3H 2 (g) takes place. The emerging gas is collected in a 5.00-L flask and is found to contain 8.62 g of CO, 2.60 g of H 2 , 43.0 g of CH 4 , and 48.4 g of H 2 O. Assuming that equilibrium has been established, what is K c for the reaction? 2. A mixture of 0.100 mol of NO, 0.050 mol of H 2 , and 0.10 mol of H
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Unformatted text preview: 2 O is placed in a 1.0-L vessel where the following equilibrium 2NO (g) + 2H 2 (g) ↔ N 2 (g) + 2H 2 O (g) is established. At equilibrium the concentration of NO is found to be 0.062 M. Calculate K c for this reaction. 3. At 900 K the following reaction 2SO 2 (g) + O 2 (g) ↔ 2SO 3 (g) has a K p of 0.345. In an equilibrium mixture the partial pressures of SO 2 and O 2 are, respectively, 0.165 atm and 0.755 atm. What is the equilibrium partial pressure of SO 3 in this mixture? 4. For the following equilibrium reaction PCl 5 (g) ↔ PCl 3 (g) + Cl 2 (g) the value of K c is 1.80 at 250 o C. If 0.200 mol of PCl 5 is introduced into a 5.00-L container, what are the equilibrium concentrations of PCl 5 , PCl 3 , and Cl 2 ?...
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