1.) Suppose you want to make 1000 kg of NH3 per hour. How many moles per hour of

Question

1.) Suppose you want to make 1000 kg of NH3 per hour. How many moles per hour of N2 and H2 will be needed?

N2 + 3H2 ----> 2NH3

2.) The pure N2(g) needed for the ammonia synthesis reaction will be taken from air. This is done with an air liquifaction plant. Suggest a way this might work, based on knowledge of phase equilibria. To do this, first consider air to be made up of only N2 (78 mole %), O2 (21%), and Ar (1%), and estimate the mole fractions of each in both liquid and gas phases if 1 mole of air at 300 K and 4 atm total pressure is cooled to 65 K in the same volume.

Explanation / Answer

1). N2 + 3H2 ----> 2NH3

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