Unit 8 - Solubility And Concentration

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    A solution that contains all the solute it can hold at a given temperature is ______.

    • Unsaturated
    • Saturated
    • Supersaturated
    • Soluble
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  • 2. 

    _____ is the maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.

    • Supersaturation

    • Solubility

    • Concentration

    • Polarity

    Correct Answer
    A. Solubility
    Explanation
    Solubility is the maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature. It is a measure of how well a solute can dissolve in a solvent. When a solution is saturated, it means that the maximum amount of solute has been dissolved. If more solute is added, it will not dissolve and will form a separate phase. Therefore, solubility is the correct answer to this question as it accurately describes the concept of the maximum amount of solute that can be dissolved.

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  • 3. 

    Gases are _____ in cooler solvents.

    • Less soluble

    • Insoluble

    • Precipitates

    • More soluble

    Correct Answer
    A. More soluble
    Explanation
    In general, gases tend to be more soluble in cooler solvents. This is because lower temperatures decrease the kinetic energy of the gas molecules, causing them to slow down and come into closer contact with the solvent molecules. As a result, the gas molecules are more likely to dissolve and become dispersed throughout the solvent, leading to increased solubility.

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  • 4. 

    What causes soda to bubble over upon opening?

    • The pressure of the carbon dioxide in the bottle increases.

    • The carbon dioxide is more soluble.

    • The temperature inside the bottle is low.

    • Gas bubbles are exposed to the surface and come out of the solution.

    Correct Answer
    A. Gas bubbles are exposed to the surface and come out of the solution.
    Explanation
    When a bottle of soda is opened, the pressure inside the bottle decreases. This decrease in pressure causes the gas bubbles, which are formed due to the presence of carbon dioxide in the soda, to come out of the solution. As the bubbles rise to the surface, they create the characteristic bubbling and fizzing that we observe when opening a soda bottle. So, the correct answer is that gas bubbles are exposed to the surface and come out of the solution.

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  • 5. 

    Which of the following is the most precise term?

    • Concentrated

    • 40% juice by volume

    • Dilute

    • Supersweet

    Correct Answer
    A. 40% juice by volume
    Explanation
    The term "40% juice by volume" is the most precise term because it provides a specific measurement of the juice content in the product. It indicates that the product contains 40% of juice in relation to its total volume, giving a clear and accurate description of the concentration of juice in the product.

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  • Mar 21, 2023
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  • Jan 10, 2013
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    Haszshe
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