In a reactor two stream are entering, one with C6H6 at 10 atm and 27oC, and another with H2 at 10 atm and 0oC, producing C6H12 and H2 at 10 atm and 23oC, what are the total degrees of freedom?

Correct Answer: 15
Total species = 1 + 1 + 2 = 4, total stream flows = 3, stream pressures = 3, stream temperatures = 3, heat released = 1, and extent of reaction = 1, => degrees of freedom = 4 + 3 + 3 + 3 + 1 + 1 = 15.