(a) Calculate the theoretical lattice energy for the salt CaF2. (b) The hydration enthalpy of Ca²+ is –1592 kJ mol-1; the hydration enthalpy of F¯ is –497 kJ mol-. Calculate the enthalpy of precipitation of CaF2. (c) Ignoring entropy effects, use the results of your calculations to predict whether CaF; is soluble or insoluble. Can entropy effects generally safely be ignored in questions like this?

(a) Calculate the theoretical lattice energy for the salt CaF2. (b) The hydration enthalpy of Ca²+ is –1592 kJ mol-1; the hydration enthalpy of F¯ is –497 kJ mol-. Calculate the enthalpy of precipitation of CaF2. (c) Ignoring entropy effects, use the results of your calculations to predict whether CaF; is soluble or insoluble. Can entropy effects generally safely be ignored in questions like this?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

28. (a) Calculate the theoretical lattice energy for the salt CaF2. (b) The hydration
enthalpy of Ca²+ is –1592 kJ mol-; the hydration enthalpy of F is -497 kJ mol-.
Calculate the enthalpy of precipitation of CaF2. (c) Ignoring entropy effects, use the
results of your calculations to predict whether CaF, is soluble or insoluble. Can
entropy effects generally safely be ignored in questions like this?

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