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NaCl has a lattice energy of -787 kJ/mol. Consider a
Chapter 9, Problem 94E(choose chapter or problem)
NaCl has a lattice energy of -787 kJ/mol. Consider a hypothetical salt XY. X3+ has the same radius of Na+ and Y3- has the same radius as Cl-. Estimate the lattice energy of XY.
Questions & Answers
QUESTION:
NaCl has a lattice energy of -787 kJ/mol. Consider a hypothetical salt XY. X3+ has the same radius of Na+ and Y3- has the same radius as Cl-. Estimate the lattice energy of XY.
ANSWER:Solution 94E Step 1 of 2 Lattice Energy depends on ionic radii (there’s a reverse proportionality) and ion’s charge (there exists a direct proportionality). The dependence on ion’s charge can be expressed by the coulombic equation states that the magnitude of potential energy of two interacting charges is given by: Here, are charges on particles that compose atoms r, distance between the charges