Redo Problem 13.17 using Aspen Plus. Problem 13.17 The simple statement of the Le Chatelier-Braun principle given

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Redo Problem 13.17 using Aspen Plus.

Problem 13.17

The simple statement of the Le Chatelier-Braun principle given in Sec. 13.1 leads one to expect that if the concentration of a reactant were increased, the reaction would proceed so as to consume the added reactant. This, however, is not always true. Consider the gas-phase reaction 

N + 3H2NH3

Show that if the mole fraction of nitrogen is less than 0.5, the addition of a small amount of nitrogen to the system at constant temperature and pressure results in the reaction of nitrogen and hydrogen to form ammonia, whereas if the mole fraction of nitrogen is greater than 0.5, the addition of a small amount of nitrogen leads to the dissociation of some ammonia to form more nitrogen and hydrogen. Why does this occur?

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