Question: When KNO 3 is dissolved in water, the solution becomes noticeably cool. Which of the following statements best explains this observation? The hydration energy is

When KNO3 is dissolved in water, the solution becomes noticeably cool. Which of the following statements best explains this observation?

The hydration energy is endothermic.
The sum of the interactions between the ions and water are weaker than the interactions between the ions in the ionic lattice.
The hydration energy is exothermic.
The sum of the interactions between the ions and water are almost the same strength as the interactions between the ions in the ionic lattice.
The sum of the interactions between the ions and water are stronger than the interactions between the ions in the ionic lattice.

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