You wish to know the enthalpy change for the formation of liquid PC13 from the elements. P4(s) + 6 Cl2 (g) → 4 PC13 (€) A, H' =? The enthalpy change for the formation of PCI5 from the elements can be determined experimentally, as can the enthalpy change for the reaction of PCI3 (() with more chlorine to give PCI5 (s): P4(s) + 10 Cl2 (g) → 4 PCI5 (s) A,H = -1774.0 kJ/mol – rxn PCI3 (e) + Cl2 (g) → PC15 (s) A,H° = -123.8 kJ/mol – rxn Use these data to calculate the enthalpy change for the formation of 3.60 mol of PCI3 (€) from phosphorus and chlorine. Enthalpy change = | kJ

You wish to know the enthalpy change for the formation of liquid PC13 from the elements. P4(s) + 6 Cl2 (g) → 4 PC13 (€) A, H' =? The enthalpy change for the formation of PCI5 from the elements can be determined experimentally, as can the enthalpy change for the reaction of PCI3 (() with more chlorine to give PCI5 (s): P4(s) + 10 Cl2 (g) → 4 PCI5 (s) A,H = -1774.0 kJ/mol – rxn PCI3 (e) + Cl2 (g) → PC15 (s) A,H° = -123.8 kJ/mol – rxn Use these data to calculate the enthalpy change for the formation of 3.60 mol of PCI3 (€) from phosphorus and chlorine. Enthalpy change = | kJ

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter4: Energy And Chemical Reactions

Section: Chapter Questions

Problem 74QRT

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