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NaCl has a lattice energy -787 kJ>mol. Consider a hypothetical salt XY. X3+ has the same radius as Na+, and Y3- has the same radius as Cl-. Estimate the lattice energy of XY.
$$-7083 \mathrm{kJ} / \mathrm{mol}$$
Chemistry 102
Chemistry 101
Chapter 9
Thermochemistry
Thermodynamics
Chemical reactions and Stoichiometry
Carleton College
Rice University
Drexel University
University of Kentucky
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But for this question here we have Thie, which is sudden chloride, which is a lot of energy. Of leg of negative seven hundred eighty seven killed was primal and we want to consider a hypothetical salt X y, which has the same radius as any and wiping his family. This is C L and want to estimate the lattice energy of X Y. First we can refresh ourselves on Coombs wa which is energy equals one over for pie. He not time Ark. You won and our cue to over the radius are These guys are Constance, so we can just cross them up. And also the question tells us that our both of ourselves have the same radius. We can cancel out our radio as well and we're only going to be focusing on the charges of each of these salts for this case. So if we go on, look at our charters of sodium. So for an a C l si wei have a one plus for sodium. We have a one minus for our corinne. So this gives us an overall charge of negative one. So our energy would just be the negative seven eighty seven times one, um, so that it was a negative seven. It is, though, and Phil does Ramon and for our x y salt. So x y wei have a three plus on our backs and our why has a three minus So this look of us a negative nine. So we're going to multiply. That's seventy seven by nine. Because our radio of X Y is nine times bigger than this, Sodium, which is, which was one. So then we're going to take nine times seven hundred and a So when? Oops. But what we can estimate to be negative seven thousand eighty three kill Jules formal for our hypothetical assault.
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