Methane is at the rate 50 moles is supplied to a reactor with air at the rate 1000 moles, the reactor leaves O2, N2, CO2 and H2O, what is the percentage of H2O in products?(a) 5.8%(b) 9.5%(c) 15.4%(d) 20.7%This question was addressed to me in an internship interview.My question is taken from Material Balances Involving Combustion in section The Chemical Reaction Equation & Stoichometry, Material Balances for Processes Involving Reaction and Multiple Units of Basic Chemical Engineering

Methane is at the rate 50 moles is supplied to a reactor with air at t

1.	Methane is at the rate 50 moles is supplied to a reactor with air at the rate 1000 moles, the reactor leaves O2, N2, CO2 and H2O, what is the percentage of H2O in products?(a) 5.8%(b) 9.5%(c) 15.4%(d) 20.7%This question was addressed to me in an internship interview.My question is taken from Material Balances Involving Combustion in section The Chemical Reaction Equation & Stoichometry, Material Balances for Processes Involving Reaction and Multiple Units of Basic Chemical Engineering
Answer» Right CHOICE is (b) 9.5% The EXPLANATION is: The reaction is CH4 + 2O2 -> CO2 + 2H2O. O2 supplied = 100021/100 = 210 moles, N2 supplied = 100079/100 = 790 moles, => Osub>2 unreacted = 210 – 100 = 110 moles, COsub>2 FORMED = 50 moles, Hsub>2O formed = 100 moles. => Percentage of H2O = 100/1050*100 = 9.5%.

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