Saturated, Unsaturated & Supersaturated

A saturated solution is one in which no additional solute can dissolve in the solvent at that temperature. If more solute is stirred into a saturated solution, then the added solute will ____________________________ ____________________________________________. If a saturated solution is cooled, then the solution will most likely ____________________________________ ____________________________________________. An unsaturated solution is one in which more solute can dissolve in the solvent at that temperature. If more solute is stirred into an unsaturated solution, the added solute will _______________________________ ____________________________________________. not dissolve and will settle to the bottom of the container precipitate the excess solute needed to bring the solution to its new saturation point dissolve completely or dissolve only in part if the solution becomes saturated

Saturated, Unsaturated & Supersaturated On the solubility curve for a solution, any point under the curve represents a region in which the solution is ____________________. On the solubility curve for a solution, any point found on the curve represents the region in which the solution is ________________________. On the solubility curve for a solution, any point above the curve represents the region in which the solution is ____________________________________________. unsaturated exactly saturated saturated with the excess solute undissolved

Saturated, Unsaturated & Supersaturated A supersaturated solution is one in which the solvent “is holding” has more solute than it should at that temperature. Supersaturated solutions are a rare occurrence. It is not easy to make supersaturated solutions. Supersaturated solutions are created by making a saturated solution at a high temperature and then slowly cooling the mixture without any disturbance. If a tiny amount of solute is dropped into a supersaturated solution, then _________________________________ ____________________________________________. the “extra” solute will immediately precipitate out of solution

Saturated, Unsaturated & Supersaturated Ex.1) If 10.0 g of KCl is dissolved in g of water at 20.0 o C, then would the solution be described as unsaturated, saturated, or supersaturated? ________________________________________. Ex.2) If 10.0 g of KClO 3 is stirred into g of water at 20.0 o C, then would the solution be described as unsaturated, saturated, or supersaturated? ________________________________________. Ex.3) If 10.0 g of KClO 3 is dissolved in g of water at 20.0 o C, then would the solution be described as unsaturated, saturated, or supersaturated? ________________________________________. unsaturated saturated with about 1 g of undissolved KClO 3 supersaturated

Saturated, Unsaturated & Supersaturated Ex.4) If g of KI is stirred into g of water at 20.0 o C, then would the solution be described as unsaturated, saturated, or supersaturated? ______________________________________ Ex.5) If g of KNO 3 is stirred into g of water at 60.0 o C, then would the solution be described as unsaturated, saturated, or supersaturated? ______________________________________ Ex.6) How many grams of KNO 3 will exactly saturate g of H 2 O at 20.0 o C? ______________ g unsaturated ≈70