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(a) Differentiate between a saturated and an unsaturated solution. How will you test whether a given solution is saturated or not?
(b) How would you prepare a saturated solution of sodium chloride in water at 25°C ? What will happen if this solution is cooled to 10°C?
Saturated Solution | Unsaturated Solution | |||
A saturated solution is one that does not allow the dissolution of additional solutes at a specific temperature. | An unsaturated solution is one that allows the dissolution of additional solutes at the same temperature. | |||
A saturated solution does not dissolve additional solutes or crystals in it. Therefore, the crystal keeps its size when it is put in a saturated solution. On cooling the solutions, the saturated solution will first form crystals. | If a crystal dissolves in a solution, the solution is said to be unsaturated. This is because an unsaturated solution is capable of dissolving additional solutes into it. |