problem_set7

# problem_set7 - 10.34 Fall 2006 Homework#7 Due Date...

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10.34 – Fall 2006 Homework #7 Due Date: Wednesday, October 25 th , 2006 – 9 AM Problem 1: Do problem 4.B.1 in Beers’ textbook (pg. 294). Problem 2: Do problem 5.B.4 in Beers’ textbook (pg. 357). Problem 3: Equilibrium on a mixture of gases In this problem, we want to find the equilibrium composition of a mixture of gases at constant T = 1000 K and P = 1 atm in the steam reforming of methane: 42 22 2 aCH bH O xCO yCO zH HO HOOH δγ ++ + + + U If you wanted to know the best you can do for hydrogen production, you would need to know the equilibrium composition at the temperature of interest. The typical solution procedure to this type of problem involves minimizing the total Gibbs free energy of the system by changing the number of moles of the species in the system, subject to the conservation of atoms. We can write that the Gibbs free energy of the system is a function of T, P, and the number of moles of the species, then differentiate to get the following: () ,, , ii ki total total i total total total total i species Pn Tn i GG T P n G dG dT

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problem_set7 - 10.34 Fall 2006 Homework#7 Due Date...

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