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Selective oxidation of hydrocarbons is a known method to produce alcohols. However, the alcohols react with the oxygen to produce aldehydes, and the latter react with oxygen to produce organic acids. A 52.0 mol/s stream consisting of 90.0% ethane and 10.0% nitrogen is mixed with a 42.0 mol/s air stream and fed into a catalytic reactor. The following reactions take place in the reactor:
2C2H6 + O2 ---> 2C2H5OH
2C2H5OH + O2 ---> 2CH3CHO + 2H2O
2CH3CHO + O2 ---> 2CH3COOH
The oxygen conversion is 80.0%, and the concentration of the ethanol in the product stream is three times that of the aldehyde and four times that of the acetic acid.
a) What is the fractional conversion of ethane?
b) What is the production rate of ethanol?
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