Question

Two feeds, F1 with H = 10 J/mole and 5 moles with H = 20 J/mole, if the mole of products is 10 what is the enthalpy of products?

(a) 10 J/mole

(b) 15 J/mole

(c) 20 J/mole

(d) 25 J/mole

I have been asked this question by my college director while I was bunking the class.

I'd like to ask this question from Solving Energy Balance Problems topic in chapter Application of Energy Balances in the Absence of Chemical Reactions and Energy Balances: How to Account for Chemical Reaction of Basic Chemical Engineering

Answer 1

Right option is (b) 15 J/mole

The best explanation: 10*5 + 5*20 = 10*H, => H = 15 J/mole.