Final answer:
To arrange the salts by their molar solubility, calculate the molar solubility, x, for each salt using the solubility product constant (Ksp). Then, arrange the salts in order from most soluble to least soluble based on their x values.
Step-by-step explanation:
Solubility Product and Molar Solubility
In order to arrange the salts by their molar solubility in water, it is necessary to calculate the molar solubility, x, for each salt using the solubility product constant (Ksp). The solubility product constant can be calculated by dividing the amount of salt dissolved in grams per 100 mL of water by the volume of water. The molar solubility can then be determined by dividing the amount of salt dissolved in moles by the volume of water in liters.
Once the molar solubility for each salt is calculated, the salts can be arranged in order from most soluble to least soluble based on their x values.