The standard heat of formation of CaBr 2 is -675 kJ/mol. The first ionization energy of Ca

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The standard heat of formation of CaBr2 is -675 kJ/mol. The first ionization energy of Ca is 590 kJ/mol, and its second ionization energy is 1145 kJ/mol. The heat of sublimation of Ca[Ca(s) → Ca(g)] is 178 kJ/mol. The bond energy of Br2 is 193 kJ/mol, the heat of vaporization of Br2(1) is 31 kJ/mol, and the electron affinity of Br is -325 kJ/mol. Calculate the lattice energy of Cabr2.

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