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AssignmentTwoKey - Take Home Assignment#2 Key Please turn...

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Take Home Assignment #2 Key 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? Answer . The masses provide the absolute amount of each reactant and product at equilibrium. Converting each to moles and dividing by the volume gives the equilibrium molar concentrations: 0.06155 M CO, 0.2579 M H 2 , 0.5361 M CH 4 and 0.5373 M H 2 O. The equilibrium constant for the reaction is 00367 . 0
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