12, and 13

12. The key step in the production of sulfuric acid is the oxidation of SO2, which is too slow at 298K. To overcome this low rate, the process is conducted at an elevated temperature. What is Kc for the reaction at 873K with G873=13.35kJmol1 2SO2(g)+O2(g)2SO3(g) A.57.2 B. 4.5 C. 6.3 D. 5.2 E. 8.2 13. Consider the following reaction at 298K. 2NO(g)+O2(g)2NO2(g)G=71.2kJ What is Grxn in kJ under the following conditions: PNO=0.100atm;PO2=0.100atm; PNO2=2.00atm