A student is preparing a solution by dissolving 25 grams of ...

Question

A student is preparing a solution by dissolving 25 grams of potassium chloride (KCl) in 100 grams of water. After the KCl has fully dissolved, the student adds another 10 grams of KCl and notices that it does not dissolve, settling at the bottom of the container. What type of solution was formed initially before adding the extra 10 grams of KCl?

Question Analysis
This question tests the student's understanding of the different types of solutions based on their solubility limits.

Key Concept Explanation
An unsaturated solution can dissolve more solute under the current conditions.
A saturated solution cannot dissolve any more solute under the current conditions; any excess solute remains undissolved.
A supersaturated solution holds more dissolved solute than the normal maximum and is unstable.

Step-by-step Solution
1. The student initially dissolves 25 grams of KCl in 100 grams of water, and all of it dissolves.
2. When the student adds an additional 10 grams...

Chemistry

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