Which of the following should most favor the solubility of an ionic solid in water?
A)a low lattice energy for the solid and a low hydration energy for its ions
B)a low lattice energy for the solid and a high hydration energy for its ions
C)a high lattice energy for the solid and a low hydration energy for its ions
D)a high lattice energy for the solid and a high hydration energy for its ions

Question

Quizplus · Accepted Answer

The solubility of an ionic solid in water is dependent on the balance of lattice energy and hydration energy. Lattice energy is the energy required to break apart the ionic lattice of the solid, while hydration energy is the energy released when ions dissolve in water and become surrounded by water molecules. A low lattice energy for the solid would make it easier to break apart, while a high hydration energy for its ions would attract more water molecules and stabilize the ions in solution. Therefore, choice B, which has a low lattice energy for the solid and a high hydration energy for its ions, would most favor the solubility of the ionic solid in water.

Which of the Following Should Most Favor the Solubility of an Ionic