key-Chem375 HW8-fall 2018-Key-29.11.2018.pdf - HW8 chem375 fall 2018 HNIMIR Fall 2018 Key HW8 Chem375 HW8 Fall 2018 Industrial Chemistry key Topics

key-Chem375 HW8-fall 2018-Key-29.11.2018.pdf - HW8 chem375...

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HW8 chem375 fall 2018 HNIMIR Fall 2018 Key HW8 1 Chem375 HW8: Fall 2018 Industrial Chemistry key Topics : Drugs, Making medicines & Pollution control in internal combustion engine Q1: Define the followings: drug, TWC and combinatorial chemistry Drug: A Chemical Substance that Interacts with a Living System and Produces a Biological Response. TWA: Is the mixed catalyst which is fixed and supported within the Exhaust of cars with the aim to control emissions out of internal combustion engine. It consist of Pt/Rh & CeO 2 , mainly to catalyzes redox reaction that lead eventually to the conversion of the three main pollutants, CO, HC,s and NOx into environmentally friendly gases. Combinatorial chemistry is the organic chemistry that deals with the synthesis of medicine in which organic compounds are made while attached to a resin and then released from the resin using a strong acid . Q2: Making medicines: A chemist requires a sample of the ester pentyl propanoate, which he intends to make by the reaction of propanoic acid with pentan-1-ol.
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Unformatted text preview: a) (5 points) Write the molecular formulae of each of these compounds and calculate their molecular masses. Answer: HW8 chem375 fall 2018 HNIMIR Fall 2018 Key HW8 2 b) (2 points) Write an equation for the reaction of propanoic acid with pentan-1-ol. Answer: c) (3 points) If the chemist requires 0.144 g of the ester, what is the minimum mass of propanoic acid that he needs to start with? 0.074 g Q3: 1) Briefly describe the components of the catalytic convertor. Answer: HW8 chem375 fall 2018 HNIMIR Fall 2018 Key HW8 3 2) Mention the main reactions involved to subsiding pollution in internal combustion engine? Answer: 3) State and explain the function of CeO 2 in the TWC. 1) as oxygen source in rich condition as shown in the below reaction: 2. During rich mode operation, CeO 2 Involes in steam reforming of CO and HC,s toproduce CO 2 and the H 2 . Hydrogen produced will reduces the NOx into N 2 3. It improves the overall catlyst performance for CO oxidation. Good Luck HW8 chem375 fall 2018 HNIMIR Fall 2018 Key HW8 4...
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  • Fall '18
  • Hassan Nimir

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