hw5_sol - 1. Suppose someone gave you a container with 1...

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1. Suppose someone gave you a container with 1 mole of N 2 . Estimate the number of N atoms in the container at (a) P=1 atm, T=298K, (b) P = 0.1 atm, T = 298K, and (c) P=1 atm, T = 1000K. Use Table C.3 in your textbook, assume that nitrogen is an ideal gas and that its heat capacity is temperature independent . We have solved this problem in the class (except that we were doing it for O 2 ). Here are the answers: a) the number of atoms is N ~ 2.97 × 10 -56 < 1 (i.e., zero) b) N = 0 c) N = 178 Note: You could solve this by either using the van’t Hoff eq., in which case you would have to take the temperature dependence of H into account (assuming that the heat capacities are constant) or you could simply look up the G f for each component at T=1000K 2. For the reaction CH 4 (g) + H 2 O(g) = CO(g) + 3H 2 (g) A . Calculate the equilibrium constant K at T=500K, P=1 atm, using the following data: G f (CH 4 ) = -32741 J/mol, G f (H 2 O) = -219051 J/mol, G f (CO) = -155414 J/mol,
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hw5_sol - 1. Suppose someone gave you a container with 1...

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