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HW2_2009_solns

# HW2_2009_solns - Homework Assignment 2 Due February 1...

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Homework Assignment 2, Due February 1. Determine the activation energy and frequency factor from the following data k (min -1 ) 0.001 0.050 T (°C) 0.00 100 Do this using k(T) = Aexp(- E/RT) and k(T) = A’T n exp(- E’/RT) with n = 1. What is the percentage difference between the two activation energies? Calculate k at 1000°C using both forms of the Arrhenius equation and find the percentage difference between these. Plot k as a function of T over the range 100 to 400°C (try this with both linear graph axes and with semilog).

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2. Taking H 2 as the basis of calculation, construct a complete stoichiometric table for the reaction 1/2N 2 + 3/2H 2 NH 3 For an isothermal, isobaric flow system with equimolar feeds of N 2 and H 2 . If the entering total pressure is 16.4 atm and the entering temperature is 1727°C, calculate the concentrations of NH 3 and H 2 when the conversion of H 2 is 60%. If you took N 2 as the basis of the calculations, could 60% conversion of N 2 be achieved (prove your answer).

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3. We said that if the irreversible reaction aA + bB
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