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You wish to know the enthalpy change for the formation of liquid PCl3 from the elements. P4 (s) + 6 Cl2 (g) -- --> 4 PC13 (1): Change in enthalpy = #kJ? The enthalpy change for the formation of PCI 5 from the elements can be determined experimentally, as can the enthalpy change for the reaction of PCI 3 (/) with more chlorine to give PCl5 (s): P4 (s) + 10 Cl2 (g) - --> 4 PCl5 (s) H = -1774.0 kJ/mol*rxn PC13() + Cl2 (g) --> PCl5 (s) H = -123.8 kJ/mol*rxn Use these data to estimate the change in enthalpy for the first reaction, the formation for PC|3 from its elements. {answer looks like # kJ}

You wish to know the enthalpy change for the formation of liquid PCl3 from the elements. P4 (s) + 6 Cl2 (g) -- --> 4 PC13 (1): Change in enthalpy = #kJ? The enthalpy change for the formation of PCI 5 from the elements can be determined experimentally, as can the enthalpy change for the reaction of PCI 3 (/) with more chlorine to give PCl5 (s): P4 (s) + 10 Cl2 (g) - --> 4 PCl5 (s) H = -1774.0 kJ/mol*rxn PC13() + Cl2 (g) --> PCl5 (s) H = -123.8 kJ/mol*rxn Use these data to estimate the change in enthalpy for the first reaction, the formation for PC|3 from its elements. {answer looks like # kJ}

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter8: Thermochemistry
Section: Chapter Questions
Problem 11QAP: When one mol of KOH is neutralized by sulfuric acid, q=56 kJ. (This is called the heat of...
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You wish to know the enthalpy change for the formation of liquid PCl3 from the elements. P4 (s) + 6 Cl2 (g) -- --> 4 PC13 (1): Change in enthalpy = #kJ? The enthalpy change for the formation of PCI 5 from the elements can be determined experimentally, as can the enthalpy change for the reaction of PCI 3 (/) with more chlorine to give PCl5 (s): P4 (s) + 10 Cl2 (g) - --> 4 PCl5 (s) H = -1774.0 kJ/mol*rxn PC13() + Cl2 (g) --> PCl5 (s) H = -123.8 kJ/mol*rxn Use these data to estimate the change in enthalpy for the first reaction, the formation for PC|3 from its elements. {answer looks like # kJ}
Transcribed Image Text:You wish to know the enthalpy change for the formation of liquid PCl3 from the elements. P4 (s) + 6 Cl2 (g) -- --> 4 PC13 (1): Change in enthalpy = #kJ? The enthalpy change for the formation of PCI 5 from the elements can be determined experimentally, as can the enthalpy change for the reaction of PCI 3 (/) with more chlorine to give PCl5 (s): P4 (s) + 10 Cl2 (g) - --> 4 PCl5 (s) H = -1774.0 kJ/mol*rxn PC13() + Cl2 (g) --> PCl5 (s) H = -123.8 kJ/mol*rxn Use these data to estimate the change in enthalpy for the first reaction, the formation for PC|3 from its elements. {answer looks like # kJ}
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