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 N2 in products?(a) 25.4%(b) 45.2%(c) 75.2%(d) 95.6%The question was asked during an interview for a job.This interesting question is from Material Balances Involving Combustion in portion 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 N2 in products?(a) 25.4%(b) 45.2%(c) 75.2%(d) 95.6%The question was asked during an interview for a job.This interesting question is from Material Balances Involving Combustion in portion The Chemical Reaction Equation & Stoichometry, Material Balances for Processes Involving Reaction and Multiple Units of Basic Chemical Engineering
Answer» The CORRECT option is (C) 75.2% EASY explanation: The reaction is CH4 + 2O2 -> CO2 + 2H2O. O2 supplied = 100021/100 = 210 moles, N2 supplied = 100079/100 = 790 moles, => O2 unreacted = 210 – 100 = 110 moles, CO2 formed = 50 moles, H2O formed = 100 moles. => Percentage of N2 = 790/1050*100 = 75.2%.

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