View the step-by-step solution to:


I was curious as to if you could help me with

a few Thermochemistry P Chem homework problems? I just need help with 4 and 6, please. However, completing 4 does require the answer from Problem 3, but I am almost so sure I completed that one (#3) correctly.

3) 2.3 g of gaseous ethylene oxide is burned at T = 298 K. The heat into the environment is qP;env = +68:2 kJ. Using this result and the data tables in the textbook determine Hof (298 K) of ethylene oxide. Assume that the reaction occurred with all species at partial pressure equal to 1 bar.

4)Use your result from the previous problem and the data tables in the textbook to determine the enthalpy change for oxidation of 1.00 g ethylene to ethylene oxide, at standard state. Compare your value to that for complete combustion of 1.00 g ethylene to CO2(g). Which is more exothermic?

6) Use the average bond energies in Table 4.3 to estimate UoR for the combustion of ethylene gas. Also calculate UoR from the HoR that you computed in Problem 4 noting that for ideal gases H = U + ngasRT. What is the percent error from using average bond energies?

Top Answer

Sign up to view the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.


Educational Resources
  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question