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Physical Science Review 7.2

Test Description: Concentration and Solubility

Instructions: Answer all questions to get your test result.

1) Solubility is

Athe amount of solute that will dissolve in a given amount of solvent at any temperature Bthe amount of solute that will dissolve in a given amount of solvent at a certain temperature Cthe amount of solvent that will dissolve a given amount of a solute at any temperature Dthe amount of solvent that will dissolve a given amount of a solute at a certain temperature

2) Which of the following sugar solutions is most concentrated?

A15 g sugar dissolved in 25 g of solution B2 g sugar dissolved in 100 g of solution C12 g sugar dissolved in 30 g of solution D25 g sugar dissolved in 60 g of solution

3) Which of the following sugar solutions is most dilute?

A15 g sugar dissolved in 25 g of solution B2 g sugar dissolved in 100 g of solution C25 g sugar dissolved in 60 g of solution D12 g sugar dissolved in 30 g of solution

4) KCl is added to water until no more can be dissolved at that temperature. Some solid remains at the bottom of the beaker. How would you describe the solution?

Aheterogeneous Bunsaturated Csaturated Dsupersaturated

5) Which combination of solid and liquid would likely form a solution?

AIonic solid and non-polar liquid BPolar solid and non-polar liquid CNon-polar solid and polar liquid DIonic solid and polar liquid

6) Which compound is the most soluble in 100 g of water at 0 degrees Celsius?

ALead Chloride: solubility 0.67 g BAluminum Sulfate: solubility 31.2 g CBarium Hydroxide: solubility 1.67 g DCesium Nitrate: solubility 9.33 g

7) Which of the following will increase gas solubility?

Adecreased solvent Bincreased volume Cdecreased temperature Dincreased pressure

8) When cooks heat up a saturated solution and then let it cool they are left with a

Asaturated solution Bunsaturated solution Cdilute solution Dsupersaturated solution

9) Which 2 factors will decrease solubility?

Aincreased temperature and decreased solute Bincreased temperature and increased solute Cdecreased temperature and increased solute Ddecreased temperature and decreased solute

10) In which the following cases is pressure a factor in the solubility of the solute in the solvent?

Acarbon dioxide is dissolved in water Bsalt is dissolved in water Calcohol is dissolved in water Dsugar is dissolved in water

*select an answer for all questions

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