# 13. [aqueous Solutions] Practice

9 Questions | Attempts: 185
Share Settings • 1.
a.) Why doesn't vegetable oil dissolve in water?
• A.

Water is a polar molecule while oil is nonpolar.

• B.

Water is a nonpolar molecule while oil is polar.

• C.

Both molecules are nonpolar.

• D.

Both molecules are polar.

• 2.
b.) To help dissolve a solute, we can add heat.  This tells us that the process of dissolving a solute is...
• A.

Endothermic.

• B.

Exothermic.

• C.

Isothermic.

• 3.
c.) Which of the following is the BEST electrolyte?
• A.

Salt water

• B.

Sugar water

• C.

Pure water

• D.

Carbonated water

• 4.
D.) Which of the following happens when salt is added to water?
• A.

The boiling point increases.

• B.

The freezing point decreases.

• C.

The vapor pressure decreases.

• D.

All of the above.

• 5.
e.) According to the solubility curve shown here, how many grams of sodium chloride could you dissolve in 100 mL of water at 10 degrees?
• A.

35 g

• B.

10 g

• C.

30 g

• D.

80 g

• 6.
f.) Tom dissolves 20 grams of potassium chloride in 100 mL of water at 30 degrees.  According to the solubility curve, this solution can best be described as...
• A.

Unsaturated.

• B.

Saturated.

• C.

Supersaturated.

• 7.
g.) If I dissolve 20 grams of sodium chloride in 100 mL of water, what is the concentration of my solution?
• A.

5 M

• B.

0.2 M

• C.

0.34 M

• D.

3.4 M

• 8.
h.) If Harriet wants to create 250 mL of a 0.5 M CO2 solution, how many grams of CO2 must she dissolve?
• A.

125 g

• B.

2.8 g

• C.

0.55 g

• D.

0.125 g

• 9.
i.) 200 mL of water were added to 150 mL of a 2 M Kool Aid solution.  What is the new concentration?
• A.

0.86 M

• B.

1.5 M

• C.

0.01 M

• D.

2.7 M

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