You wish to know the enthalpy change for the formation of liquid PCI, from the elements P.()+6 Cla(s) - 4 PC(O) AH' => The enthalpy change for the formation of Pois from the elements can be determined experimentally, as can the enthalpy change for the reaction of PCI, () with more chlorine to give POIs): P.(8) + 10 C1 (8) ► 4 PC1 (5) AN=-1774.0 kJ/mol -ran PCI,(0) + C(x) - PCI) AH--123.8 kJ/mol – rxn Use these data to calculate the enthalpy change for the formation of 3.90 mol of PCI.() from phosphorus and chlorine. Enthalpy change = 1262 56 pl pt pt ku pl pl HUNT()