Mastering Chemistry: Course MasteringChemistry P4 X Home I Chegg.com (Not res O

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Mastering Chemistry: Course MasteringChemistry P4 X Home I Chegg.com (Not res O session masteringchemistry.com 58497599 UBCHE 111 W 2016 Signed in as sam larkin l Help l Close P4- Chapter 7 and 8 Problem 7.108 Resources previous l 3 of 25 l next Problem 7.108 Part A Consider the gas-phase transfer of an electron from a Write the reaction that relates to an ionization energy and that relates to an electron affinity. sodium atom to a chlorine atom: Express your answers as chemical equations separated by a comma. Identify all of the phases in your answer. Na(g) +Cl(g) Na+ (g) Cl (g) Cl(g) e Cl (g), Na(g) Na+ (g) e Submit My Answers Give Up Correct Part B Use the result from part A, data in this chapter, and Hess's law to calculate the enthalpy of the above reaction kJ AH Submit My Answers Give U 10:59 PM O I'm Cortana. Ask me anything A 1/19/2016

Explanation / Answer

Enthalphy of reaction = Ionization energy of Na + Electrona ffinity of Cl + Lattice energy of NaCl

                          = 495.8 KJ -348.575KJ -786 KJ = -638.775 KJ   ( data taken from web)

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