If the reactants and the products are at standard conditions (1 atm, 298K), how
ID: 973706 • Letter: I
Question
If the reactants and the products are at standard conditions (1 atm, 298K), how does the heat release of a stochiometric reaction of a hydrocarbon with pure oxygen compare with the heat release of a stochiometric reaction of a hydrocarbon with air?
a. The heat release depends on the reaction rate which is not given in the question. b. The heat release is the same in either case. c. The heat release using pure oxygen is more than that with air. d. The heat release using pure oxygen is less than that with air.
Explanation / Answer
answer is (c) The heat release using pure oxygen is more than that with air.
If the reactants and the products are at standard conditions (1 atm, 298K), the heat release of a stochiometric reaction of a hydrocarbon with pure oxygen is more than that of the heat release of a stochiometric reaction of a hydrocarbon with air.