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Solved: Calculate the lattice energy of calcium chloride
Chapter 9, Problem 26P(choose chapter or problem)
Calculate the lattice energy of calcium chloride given that the heat of sublimation of Ca is 121 kJ/mol and \(\Delta H_{\mathrm{f}}^{\circ}\left(\mathrm{CaCl}_{2}\right)=-795 \mathrm{~kJ} / \mathrm{mol}\). (See Tables 8.2 and 8.3 for other data.)
Questions & Answers
QUESTION:
Calculate the lattice energy of calcium chloride given that the heat of sublimation of Ca is 121 kJ/mol and \(\Delta H_{\mathrm{f}}^{\circ}\left(\mathrm{CaCl}_{2}\right)=-795 \mathrm{~kJ} / \mathrm{mol}\). (See Tables 8.2 and 8.3 for other data.)
ANSWER:
Step 1 of 3
Lattice energy is defined as the energy needed for separating one mole of a solid compound that is ionic in nature into the gaseous form. The heat of sublimation of calcium as well as the heat of formation of calcium chloride is given in the question.