The naturally occuring compound urea, CO(NHsub2)sub2, was first synthesized by F

Question

The naturally occuring compound urea, CO(NHsub2)sub2, was first synthesized by Friedrich Wohler in Germany in 1828 by heating ammonium cyanate. This synthesis was a significant event because it was the first time that an organic compound had been produced from an inorganic substance. Urea may also be made by the reaction of carbon dioxide and ammonia:

COsub2(g)+2NHsub3(g)arrowCO(NHsub2)sub2(s)+Hsub2O(g)

What volumes of COsub2 and NHsub3 a 200. atm and 450. degree C are needed to produce 2.50kg of urea, assuming the reaction goes to completion?

Explanation / Answer

CO2 + 2NH3 ---------> CO(NH2)2 + H2O

Moles of urea = 2500/60 = 41.67 moles

Hence we need same moles of CO2 and twice as many moles of NH3

Volume of NH3 = (41.67*2)*0.0821*723/2 = 2473.46 liters

Volume of CO2 = (41.67)*0.0821*723/2 = 1236.73 liters

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