Molar solubility is defined as what quantity?

Molar solubility is defined as what quantity?

• A. is the number of moles of the solute that can be dissolved per liter of solution
• B. the mass of solute that dissolves per liter
• C. the number of grams of solute dissolved per liter
• D. the total moles of solute in the solution

Answer: (A)

Molar solubility is the amount of solute that can dissolve to form a saturated solution, expressed as moles per liter. In other words, it’s the concentration (molarity) of the dissolved solute when the solution is at the point of saturation. This is a measurement of how much solute can be added per liter of solution, not a mass per liter, and not the total moles present in the solution regardless of volume. Temperature affects it, since solubility depends on temperature, and for salts that dissociate, the solubility relates to the amounts of ions in solution according to the dissolution stoichiometry.

Molar solubility is the amount of solute that can dissolve to form a saturated solution, expressed as moles per liter. In other words, it’s the concentration (molarity) of the dissolved solute when the solution is at the point of saturation. This is a measurement of how much solute can be added per liter of solution, not a mass per liter, and not the total moles present in the solution regardless of volume. Temperature affects it, since solubility depends on temperature, and for salts that dissociate, the solubility relates to the amounts of ions in solution according to the dissolution stoichiometry.