7. Calculate the AS for the following reaction? Cl:(8) + SO2(g) SOCI:(8) + C1.O(8) Substance: Cl2(g) SO2(g) SOCI:(8) CI.O(8) S(J/K.mol): 223.0 248.1 309.8 266.1 8. Calculate the As for the combustion of propane? CH3(g) + O2(g) CO:(8) +H.0(8) Substance CH.(8) O_() CO() H.O(8) S(J/K.mol) 269.9 205.0 213.6 188.7 9. Elemental boron can be formed by reaction of boron trichloride with hydrogen. BC1;(8) +H:(8) B(s) + HCI(8) Substance BCI.() H:(g) B(3). HCIC) S(I/Komol) 130.6 5.9 186.8 If AS = 161.8J/Komol, Calculate the S for BC1,(8)