Solve the following reactive material balance problems.

1. Ethyl oxide is produced by the catalytic oxidation of ethylene:

2C2H4+O2 --->2C2H4O

An undesired competing reaction is the combustion of ethylene:

C2H4 +3O2 ---> 2CO2 +2H2O

The feed to the reactor (not the fresh feed to the process) contains 3 moles of ethylene per mole of oxygen. The single-pass conversion of ethylene is 20%, and for every 100 moles of ethylene consumed in the rector, 90 moles of ethylene oxide emerge in the reactor products. A multiple-unit process is used to separate the products: ethylene and oxygen are recycled to the reactor, ethylene oxide is sold as a product, and carbon dioxide and water are discarded.

a. Draw a flow diagram of the process.

b. Determine the flow rate of ethylene and oxygen if the reactor feed rate is 100 lbmol/h.

c. Calculate the lb/h of ethylene oxide produced.