Calculate the lattice enthalpy of calcium oxide from the following data.
Enthalpy of formation of Ca(g) : +178 kJ.mol-1
First ionization energy of Ca(g) : +590 kJ.mol-1
Second ionization energy of Ca(g) : +1150 kJ.mol-1
Enthalpy of formation of O(g) : +249 kJ.mol-1
First electron affinity of O(g) : +141 ( H = kJ.mol-1
Second electron affinity of O(g) : -844 H = +844) kJ.mol-1
Enthalpy of formation of CaO(s) : -635 kJ.mol-1
A) 1817 kJ.mol-1
B) 1391 kJ.mol-1
C) 2235 kJ.mol-1
D) 3754 kJ.mol-1
E) 3505 kJ.mol-1
Correct Answer:
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