Can a solution with undissolved solute be supersaturated?

No, it's only saturated. If you have any solute left anything dissolved beyond the saturation level of the solvent would crash out. The undisolved solute is a seed and the excess solute will crash out
Yes. At a given temperature and pressure, there is a practical limit to how supersaturated a solution can become. Beyond that concentration, you get undissolved solute.

Example: no matter how careful you are, you cannot dissolve 5 kilos of sugar in a glass of water. It will supersaturate, and then you will start getting a syrupy sludge with crystallization in it.
I think so by adjusting temperature and pressure
If you try to stir it and slightly heat it, and if it dissolves, then it is probably not supersaturated. To make a solution supersaturated, you need to dissolve more solute than what the liquid can hold at a given temperature, heat it to a higher temperature and then cool it fast to prevent the precipitation of the excess solute.
Lancenigo di Villorba (TV), Italy


AN AQUEOUS SOLUTION is a Physical-Chemical System where Water acts as Solvent against a Solute (e.g. Salt).
Since Solution results as an HOMOGENEOUS SYSTEM, there isn't any difference inside itself.
Usually, you form a Salt's Aqueous Solution by dissolving some Salt's Spoons or few more matter in Deionized Water : it will result an UNSATURATED SOLUTION since it will dissolve more other salt-spoons.
The Dissolvement's Power would stop when you proceed to add increasing Salt's Amounts or YOU DIMINUTE SOLUTION's TEMPERATURE.
The latter fashion may lead to SATURATED SOLUTIONs or SUPERSATURATED ONEs : the former are EQUILIBRIUM's SYSTEMs, the second ones aren't.
So, in order to form SATURATED SOLUTIONs you may obtain undissolved solute.

In order to form SUPERSATURATED SOLUTIONs you have to use FREEZE APPARATUS to avoid any EQUILIBRIUM PHENOMENA, e.g. the crystalization-germs : if precipitation occurs, you will obtain not SUPERSATURATED SYSTEMs.
I hope this could be clear.

The answers post by the user, for information only, does not guarantee the right.

More Questions and Answers:
  • Below is the question!?
  • Consider the reaction below.?
  • What happens when you put pretzels into nitric acid?
  • Concentration and pKa of weak acid solution?
  • How Would One Increase Collisions In A Reaction?
  • In the case of NaOH and HC1, why are the normality and molarity the same?
  • What would be the best method to remove zinc (Zn) from galvanized steel pipe?
  • Is there anyway to make the diet coke with mentos effect without mentos?