Problem: Using the data in the figures above calculate ΔE for the reaction Na(g)+Cl(g)?Na+(g)+Cl?(g)

FREE Expert Solution

To calculate ΔE for the reaction: Na(g)+Cl(g) → Na+(g)+Cl-(g)


First ionization energy → removing the first valence electron from neutral Na

N→ Na+ + e-                 I. E. = 496 kJ/mol


Electron affinity is the energy change from the addition of 1 e to a gaseous element/ion. 

Cl(g) + e- Cl-(g)               E. A. = -349 kJ/mol


ΔE = I.E. + E.A. 

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Problem Details

Using the data in the figures above calculate ΔE for the reaction Na(g)+Cl(g)?Na+(g)+Cl?(g)

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