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Questions and Answers
How much additional mass of Potassium dichromate is required to saturate the solution at 50℃?
How much additional mass of Potassium dichromate is required to saturate the solution at 50℃?
18g
Which of the following is NOT true regarding solubility curves?
Which of the following is NOT true regarding solubility curves?
- Some substances have decreased solubility with increased temperature.
- All substances increase in solubility with temperature. (correct)
- Solubility is not affected by temperature.
- Solubility curves can vary for different substances.
How is solubility determined?
How is solubility determined?
By determining the maximum mass of a solute that can be dissolved in 100g of a solvent at a given temperature.
How is a supersaturated solution made?
How is a supersaturated solution made?
What best describes a supersaturated solution?
What best describes a supersaturated solution?
Flashcards
Solubility
Solubility
The maximum amount of solute that can dissolve in 100g of solvent at a specific temperature.
Supersaturated Solution
Supersaturated Solution
A solution that contains more than the maximum amount of dissolved solute than a saturated solution under the same conditions.
Saturated Solution
Saturated Solution
A solution holding the maximum amount of solute possible at a given temperature.
Creating a Supersaturated Solution
Creating a Supersaturated Solution
The process of adding more solute to a saturated solution at a higher temperature, then cooling it down to form a supersaturated solution.
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Solubility
Solubility
The ability of a substance (solute) to dissolve in a liquid (solvent) to form a solution.
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Solubility Concepts
- At 50℃, a solution with 12g of potassium dichromate (K₂Cr₂O₇) per 100g of water is not saturated; an additional 18g is needed to reach saturation.
- Not all substances exhibit increased solubility with rising temperature; this statement is false regarding solubility curves.
Measuring Solubility
- Solubility is quantified by the maximum mass of a solute that can dissolve in 100g of solvent at a specified temperature.
Creating Supersaturated Solutions
- Supersaturation occurs by first creating a saturated solution, then heating it, adding extra solute, and finally cooling back down.
Characteristics of Supersaturated Solutions
- A supersaturated solution holds more dissolved solute than what is typically possible for a saturated solution under equivalent conditions.
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