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Pure ethanol vapor is introduced into a reactor containing an alumina catalyst at a flow rate of 100 kmol/hr. The output stream consists of 95 kmol/hr of ethylene, 97.5 kmol/hr of water vapor, and 2.5 kmol/hr of diethyl ether. Considering the following reactions: C2H5OH → C2H4 + H2O and 2C2H5OH → C2H5–O–C2H5 + H2O, what is the percentage conversion of ethanol in the reactor?

Chemical Reaction MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Chemical Reactionchemical-engineering › chemical-reaction
Published
23 Feb 2019
Last updated
28 May 2026

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Explanation

The total ethanol fed is 100 kmol/hr. All ethanol is converted into products (ethylene, water, and diethyl ether) as indicated by the product composition, implying complete conversion. Therefore, the ethanol conversion in the reactor is 100%.

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