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

question 75

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 ( $\Delta$ H = -141) kJ.mol^-1
Second electron affinity of O(g) : -844 ( $\Delta$ 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

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