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You wish to know th enthalpy change for the formation of liquid PCl3 fro the elements. The enthalpy change for the formation of PCL5 from the elements xan be determined experimentally, as can the enthalpy change for the reaction of PCl3(l) with more chlorine to give PCl5(s) Use these data to calculate the enthalpy change for the formation of 1.40 mol of PCl3(l) from phosphorous and chlorine. Enthalpy change = ____ kJ