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Which consequence results when rapid hydration of solid anhydrous calcium chloride (CaCl2) occurs?

A)Exothermic heat release raises solution temperature
B)Endothermic absorption cools the solution
C)Volume contraction decreases chemical potential
D)Vapor pressure elevation stabilizes hydration layers

💡 Explanation

The high lattice energy broken during dissolution triggers a very exothermic reaction via ion-dipole interactions. Because hydration enthalpy is highly negative, heat is released, raising the solution temperature, therefore favoring dissolution of other ionic compounds rather than cooling.

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