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Problem: Urea (H2NCONH2) is used extensively as a nitrogen source in fertilizers. It is produced commercially from the reaction of ammonia and carbon dioxide:2NH3(g) + CO2(g)  H2NCONH2(s) + H2O(g)Ammonia gas at 223°C and 90. atm flows into a reactor at a rate of 500. L/min. Carbon dioxide at 223°C and 45 atm flows into the reactor at a rate of 600. L/min. What mass of urea is produced per minute by this reaction assuming 100% yield?

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FREE Expert Solution

We are asked to calculate the mass of urea is produced per minute by this reaction assuming 100% yield

2NH3(g) + CO2(g) →  H2NCONH2(s) + H2O(g)


Step 1. Calculate moles per minute of each

NH3

PV = nRTn =PVRT n =(90 atm)(500 L)(0.08206 L-atmmol-K)(223+273.15)K 

n = 1105.27 mol/min NH3


CO2

PV = nRTn =PVRT n =(45 atm)(600 L)(0.08206 L-atmmol-K)(223+273.15)K 

n = 663.16 mol/min CO2


Step 2. Simultaneously calculate the theoretical yield and identify the limiting reactant.

Use both to calculate for H2NCONH2

Molar mass H2NCONH= 60.07 g/mol


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Problem Details

Urea (H2NCONH2) is used extensively as a nitrogen source in fertilizers. It is produced commercially from the reaction of ammonia and carbon dioxide:

2NH3(g) + CO2(g H2NCONH2(s) + H2O(g)

Ammonia gas at 223°C and 90. atm flows into a reactor at a rate of 500. L/min. Carbon dioxide at 223°C and 45 atm flows into the reactor at a rate of 600. L/min. What mass of urea is produced per minute by this reaction assuming 100% yield?