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Calculate the Lattice Enthalpy of Calcium Oxide from the Following Δ\Delta

Question 14

Multiple Choice

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 ( Δ\Delta H = kJ.mol-1
Second electron affinity of O(g) : -844 Δ\Delta 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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