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A mixture with 60% O2 and 40% H2 with pressure 5 Pa at 27^oC at the rate 15 liter/s is passed through a reactor with another stream containing pure H2 with pressure 10 Pa at 27^oC at the rate 5 liter/s, what is the fraction of H2 with pressure 5 Pa at 27^oC in product?(a) 0.2(b) 0.4(c) 0.6(d) 0.8I have been asked this question during a job interview.I'm obligated to ask this question of Material Balances Involving Ideal Gases topic in portion Recycle, Bypass, Purge, Ideal Gases and Real Gases of Basic Chemical Engineering

Answer»

The correct option is (d) 0.8

Easy explanation: Overall material BALANCE: 15 + 5 = P, => P = 20 mole/s, Overall O2 balance: 0.4*5*15 + 1*10*5 = 20*x*5, => x = 0.8.



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