If all I-F bonds have the same bond enthalpy (average l-F bond enthalpy = 273 kJ/mol), what is the theoretical value of , for this reaction: 1F7(9) + 2 1(9) --> IF5(g) + 2 IF (9) AH kJ rxn = If all I-F bonds have the same bond enthalpy (average l-F bond enthalpy = 273 kJ/mol), what is the theoretical value of , for this reaction: 1F7(9) + 2 1(9) --> IF5(g) + 2 IF (9) AH kJ rxn =