Question

Born-Haber cycle for MgO.

a. write the equation illustrating the steps shown in each part of the Born-Haper cycle.

b. using the information below, calculate the stadarn enthalpy formation for MgO. Be sure to label the steps of the cycle with equations and corresponding energy values. values.

Lattice energy for MgO: -3791 kj/mol

heat of sublimination for Mg: +147.7 kj/mol

Bond dissociation for O2: +498.4 kj/mol

First ionization energy for Mg: +738 kj/mol

second ionization energy for Mg: +1451 kj/mol

first electron affinity for O: -141.0 kj/mol

second electrin affinity for O: +744 kj/mol

Answer 1