In a saturated solution, what happens when additional salt is added?

Prepare for the NCEA Level 3 Chemistry – Aqueous Chemistry (AS91393) Exam. Utilize flashcards and multiple choice questions with hints and explanations. Excel on your exam!

In a saturated solution, the solvent has already dissolved the maximum amount of solute at a given temperature and pressure. When additional solute, such as salt, is added to this saturated solution, it cannot dissolve further because the solution has reached its saturation point. This means that the concentration of dissolved solute is at its maximum, and any additional solute will remain undissolved.

Given that the system is already saturated, the solute will either remain as a solid at the bottom of the container or may lead to some degree of crystallization where the excess solute forms solid crystals. The situation is characterized by a dynamic equilibrium between the dissolved ions and the solid solute, but the key takeaway is that no further dissolution occurs with the addition of more salt.

While it is possible for some solute to crystallize if system conditions favor it, that does not negate the fact that the solution itself will not dissolve any more of that salt. Other options such as complete dissolution or forming a cloudy solution suggest processes that contradict the very nature of a saturated solution.

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