15:00 ! 1 Time Left:0:33:05 Previous Page Gases H(8) N(8) 0(8) HO(g) NH,(g) CHOH(g) C.H.(8) Question 2 (5 points) Calculate AG at 298 K for the following reaction using table values for AH and AS. N (g) + 3 H (g) 2 NH3 (g) TABLE 19.2 Standard Molar Entropies of Selected Substances at 298 K Substance S, J/mol-K Liquids HO(1) CHOH(1) C.H.(I) Solids Fe(s) FeCl,(s) @2 Kiley avey. 130.6 191.5 205.0 188.8 192.5 237.6 269.2 69.9 126.8 172.8 27.2 142.3 #3 Next Page 3 Substance Ag(s) AgCl(s) Al(s) AlO,(s) Br(1) HBr(g) C(graphite) C(diamond) CO(g) CO(g) Ca(s) CaO(s) CaCO,(s). Cl(g) HCI(g) Cu(s) CuO(s) F.(g) HF(g) H(g) H(g) HO(g) H-OD $ 4 Standard Enthalples of Formation of Some Inorganic Substances at 25C AH;(kJ/mol) 0 - 127.0 0 -1669.8 0 -36.2 0 % 45 1.90 -110.5 -393.5 0 -635.6 -1206.9 0 -92.3 0 -155.2 0 -271.6 218.2 0 -241.8 -285.8 Substance HO(1) Hg(1) 1(s) HI(g) Mg(s) MgO(s) MgCO,(s)