(18 pts) Calculate H, os\". G., and the equilibrium constant, K, using the follo

Question

(18 pts) Calculate H, os". G., and the equilibrium constant, K, using the following data and reaction carried out at 25* C and I atm: 4. 4 Fe (s) + 3 O2 (g)2 Fe203 (s) Substance Fe2Os (s) Fe (s) O2 (g) 11r' (kl/mol) -826 S. (J/K mol) 90 27 205 (052 Kj 60-123 3 5. (10 pts) True/False (write T or F) a. In a spontaneous process, the entropy of the system always increases. b. Under a given set of conditions, all microstates of a system are equally probable. c. The term microstate refers to the energy state of a single molecule in a system of many molecules. For any reaction, if G° > 0, then K

Explanation / Answer

Post multiple questions to get the remaining answers

Q4)

4Fe(s) + 3O2(g) ------------ 2Fe2O3(s)

Delta HF (rxn) = 2 * Hf(Fe2O3) - 4 * Hf(Fe) - 3 * Hf(O2)

=> 2 * (-826) -4(0) -3(0)

=> -1652 KJ/mol

Delta S(rxn) = 2 * S(Fe2O3) - 4 * S(Fe) - 3 * S(O2)

=> 2 * 90 - 4 * 27 - 3 * 205

=> -543 J/mol

Delta G(rxn) = Delta H - T * Delta S

=> -1652 + (0.543)(298)

=> -1490.18 KJ/mol

-1490.18 * 10^3 = RTln(K)

-1490.18 * 10^3 = (8.314)(298) ln(K)

-601.46 = ln(K)

K = 4.603 * 10^(-263)

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.