Here are the essential concepts you must grasp in order to answer the question correctly.
Solubility
Solubility refers to the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature. For KBr, solubility increases with temperature, meaning more KBr can dissolve in water as the temperature rises. Understanding solubility is crucial for determining whether a solution is saturated, unsaturated, or supersaturated.
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Saturated, Unsaturated, and Supersaturated Solutions
A saturated solution contains the maximum amount of solute that can dissolve at a given temperature, while an unsaturated solution can still dissolve more solute. A supersaturated solution contains more solute than is typically soluble at that temperature, achieved by dissolving solute at a higher temperature and then cooling it. Identifying the state of a solution is essential for predicting its behavior when conditions change.
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Temperature Effects on Solubility
Temperature significantly affects the solubility of most solids in liquids; generally, higher temperatures increase solubility. The provided graph illustrates how the solubility of KBr changes with temperature, indicating that cooling a saturated solution may lead to precipitation of the solute. Understanding this relationship helps predict what happens to a solution when its temperature is altered.
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