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1)a. Using the Born Haber cycle, determine the enthalpy for lattice formation of MgO. Mg (s),...

1)a. Using the Born Haber cycle, determine the enthalpy for lattice formation of MgO.
Mg (s), ΔHsub = +148 kJ/mol bond dissociation energy for O2 = +499 kJ/mol
1st ionization energy for Mg = +738 kJ/mol    1st electron affinity for O = –141 kJ/mol
2nd ionization energy for Mg = +1450 kJ/mol 2nd electron affinity for O = +844 kJ/mol
MgO(s), enthalpy of formation = –602 kJ/mol

1)b. Calculate the lattice formation energy of MgO using the Madelung constant. MgO packs like
NaCl and has a total radii distance of 212 pm. The constant a is approximately 3.45 Å−1.

1)c. How does the lattice energy for MgO compare to NaCl?

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