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Solid KF has a lattice energy of 804 kJ/mol and a heat of solution (in water) of 15 kJ/mol. RbF has ...

Solid KF has a lattice energy of 804 kJ/mol and a heat of solution (in water) of –15 kJ/mol. RbF has a lattice energy of 768 kJ/mol and a heat of solution (in water) of –24 kJ/mol. Which salt forms stronger attractions with water?

▸ KF, since it has a larger lattice energy.

▸ RbF, since it has a smaller lattice energy.

▸ KF, since it has a more negative heat of hydration.

▸ RbF, since it has a more negative heat of hydration

▸ They form equally strong attractions with water, since they both have negative heats of mixing.

Textbook

Chemistry: An Atoms First Approach

Edition: 3^rd

Authors: Zumdahl, DeCoste

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