Question

How do you make a supersaturated solution?
A. By making a saturated solution, heating it up and adding more solute, then cooling the solution.
B. By making a saturated solution, then heating it up.
C. By making an unsaturated solution, then cooling it down.
D. By increasing the temperature of solution.
E. By making a saturated solution, heating it up and adding more solvent, then cooling the solution.

Answer 1

We know that a solution consists of solute and solvent. Solute is the chemical substance that is dissolved in the solvent. Solvent is the liquid base (usually) where solute is dissolved to form a solution. Supersaturated solution is a solution that contains more than the maximum amount of solute that is capable of being dissolved at a given temperature.

Complete step-by-step answer: When more solute is dissolved into a quantity of water than it can naturally hold, the solution is said to be supersaturated. The technique for accomplishing this is not especially difficult.
Process to prepare supersaturated solution:
Pour water in a pan, and slowly add solute. When excess solute starts to rest at the bottom of the pan, move the pan to the burner to warm it. Stir the solution, until the rest of the solute dissolves into the liquid. Slowly add more solute until a few crystals remain on the bottom of the pan.
Remove the pan from the burner and gently por the solution into a clean container. Leave the container containing the solution for a few minutes to cool it. Even after the liquid cools, the entire amount of solute will remain in the solution. This is a supersaturated solution.
Add a few crystals of solute to the cooled solution. This will cause the excess solute to start forming crystals. Formation of crystals proves that the solution is supersaturated.

So, from all the explanations, we can conclude that the correct option is A.

Note: While preparing the solution, always be careful to follow the procedure stepwise. Always use clean apparatus, to avoid any kind of error or problem while preparing the supersaturated solution. Always remember that a saturated solution is a solution that contains the maximum amount of solute that is capable of being dissolved.