The ionization energy for sodium is 496 kJ/mol. The electron affinity for chlorine is -349 kJ/mol. Use these values and Hess's law to calculate the change in enthalpy for the following reaction per mole of reagent:
Na(g) + Cl(g) → Na+(g) + Cl−(g) ΔH = ?
Express your answer with the appropriate units.
The following reaction can be written as the sum of two reactions, one of which relates to ionization energy and one of which relates to electron affinity:
Na(g) + Cl(g) → Na+(g) + Cl−(g)
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