A fictional company has been producing propene oxide, C3H6O, from propene, C3H6,
ID: 932437 • Letter: A
Question
A fictional company has been producing propene oxide, C3H6O, from propene, C3H6, with a 96.0%yield. The process requires the use of a compound called m-chloroperoxybenzoic acid, C7H5O3Cl, which can be abbreviated as mCPBA. The entire reaction takes place in the solvent dichloromethane, CH2Cl2:
C3H6+C7H5O3ClCH2Cl296.0% yieldC3H6O+C7H5O2Cl
The initial propene concentration in the solvent is 21.0 g/L.
Consider the prices of the following substances.
Also consider that the cost of waste disposal is $5.00 per kilogram of propene oxide produced.
Part A
A relatively simple way of estimating profit is to consider the the difference between the cost (the total spent on materials and waste disposal) and the earnings (the price at which the product can be sold).Calculate the profit from producing 67.00 kg of propene oxide.
Alternative method
The company is developing a "greener" method of making propene oxide from propene using hydrogen peroxide, H2O2, in supercritical water with a vanadium catalyst. In the reaction 1.00 kg of vanadium catalyst and 32.0 kg of water are used for each kilogram of propene. 75 % of the vanadium catalyst can be collected and reused in a subsequent batch:
C3H6+H2O2V, H2O89.0% yieldC3H6O+H2O
Consider the prices of the following substances.
There is virtually no waste produced with this green process and there is no waste disposal fee, but the yield is only 89.0%.
Part B
Calculate the profit from producing 67.00 kg of propene oxide by this alternative green process.
Substance Price per unit Unit propene $10.97 kg dichloromethane $2.12 L mCPBA $5.28 kg propene oxide $258.25 kgExplanation / Answer
Part A.
CH2Cl2
C3H6 + mCPBA ------------------------> C3H6O + mCBA
cost ($) 10.97/kg 5.28/kg 2.12/L 258.25/kg 5/kg
FW (g/mol) 42.08 172.57 58.08 156.57
mols 1.2017 1.2017 1.2017 1.2017
Initial mass (kg) 50.56 207.38 2.41 L 67.00 188.15
Actual cost ($) 554.64 1094.95 5.10 17302.75 940.75
-----------------------------------------------------------------------------------------------------------------------------------
Total profit = $ 14707.31 would be th profit to make 67 g of propenoxide with 96% yield
Part B.
H2O
C3H6 + H2O2 + V ---------> C3H6O + V
cost ($/kg) 10.97 1.96 57.50 258.25 57.50
FW (g/mol) 42.08 34.01 58.08
mols 1.2960 1.2960 1.2960
Initial mass (kg) 54.54 44.08 54.54 67.0 40.905
Actual cost ($) 598.3 86.40 3136.05 17302.75 1764.03
-----------------------------------------------------------------------------------------------------------------------------------
Total profit = $ 15276.03 would be th profit to make 67 g of propenoxide with 89% yield
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.