Final answer:
Calcium fluoride (CaF2) has the greatest molar solubility in water from the given list, with a Ksp of 3.9 × 10^-11, indicating that it is the most soluble compound in the list provided.
Step-by-step explanation:
The compound with the greatest molar solubility in water from the list provided is calcium fluoride (CaF2) with a solubility product constant (Ksp) value of 3.9 × 10-11. Molar solubility refers to the maximum amount of substance that can be dissolved in a given volume of solvent at a specified temperature, usually expressed in moles per liter (mol/L).
The Ksp values that have been provided are a measure of how much the compound will dissolve in pure water to reach a saturated solution. The Ksp value represents the product of the molar concentrations of the ions in a saturated solution, raised to the power of their stoichiometric coefficients.