Question

What is the value of W?

(a) 5 mole/hr

(b) 10 mole/hr

(c) 20 mole/hr

(d) 25 mole/hr

This question was addressed to me in final exam.

Question is from Bypass and Purge topic in portion Recycle, Bypass, Purge, Ideal Gases and Real Gases of Basic Chemical Engineering

Answer 1

Correct option is (a) 5 mole/hr

To elaborate: Overall C2H6 balance: 0.4*20 = 0.2*15 + 1*W, => W = 5 mole/hr.