Chapter 16 Test REVIEW
A.Matching
Match each description in Column B to the correct term in Column A.Write the letter
of the correct description on the line.
Column A
Column B
a. moles of solute in a given mass (kg) of
_b___ 1. saturated solution
solvent
b. a solution containing the maximum amount
_i___ 2. colligative properties
of
solute that can be dissolved at a given
__g___ 3. miscible
temperature
c. the number of moles of solute dissolved in
_c__ 4. molarity
1 L of solution
d. describes liquids that are insoluble in each
_f_ 5. unsaturated solution
other
e. contains only a small amount of the
_d__ 6. immiscible
maximum
amount of solute that can be dissolved at a
_j__ 7. concentrated solution
given
temperature
_a_ 8. molality
f. contains less solute than can theoretically be
dissolved
__h_ 9. supersaturated solution
g. describes liquids that dissolve in each other
h. contains more solute than can theoretically
_e__ 10. dilute solution
be held
at a given temperature
i. depend upon the number of particles of solute
in
solution
j. a solution with a large amount of solute
compared
to solvent
B. Multiple Choice
Choose the best answer and write its letter on the line.
________ 12. Which of the following operations usually makes a substance dissolve faster in a
solvent?
a. agitation c. crushing the substance to a powder
b. raising the temperature d. all of the above
________ 15. An ionic compound has a solubility of 30 g per 100 mL of water at
room temperature. A solution containing 70 g of the compound in
250 mL of water at the same temperature is:
a. saturated. b. supersaturated. c. unsaturated. d. a suspension.
________ 18. What is the molarity of a 200-mL solution in which 0.2 mole of sodium
bromide is dissolved?
a. 0.20M b. 1.0M c. 0.40M d. 4.0M
________ 20. Which of the following is not a colligative property of a solution?
a. boiling-point elevation c. vapor-pressure lowering
b. solubility d. freezing-point depression
C. True-False
Classify each of these statements as TRUE or FALSE.
False (only a few exceptions)__ 22. The solubility of a solute can be increased by cooling the
solvent.
_true_ 23. Grinding a solute increases the rate at which it dissolves.
_true___ 24. As an open bottle of a carbonated beverage warms, the concentration
of dissolved carbon dioxide decreases
_false__ 27. As the temperature of a solvent increases, the solubility of a gaseous
solute increases. (solubility of a gas decreases as temp increases)
__true__ 30. A saturated solution has a large amount of solute compared to solvent.
.
D. Problems
Solve the following problems in the space provided. Show your work.
33. Calculate the molarity of a solution prepared by dissolving 95.5 g of KNO3 in
enough water to make 750 mL of solution.
95.5 gx
1mole
 0.945 moles
101.11g
M=
molessolut e 0.945moles

 1.26M
litersolut ion
0.750 L
36. How many grams of Na2SO4 must be added to water to create 750ml of a 2.50M solution?
xmole
x = 1.875 moles
0.750 L
142.05 g
1.87 mx
 266 grams
1mole
2.50 M 
37. Calculate the molality of a solution prepared by dissolving 175 g of KNO3 in
1250 g of water.
.
175 gx
1mole
molessolut e 1.73moles
 1.73mol Molality =

 1.384m
101.11g
kgsolvent
1.25kg
38. Using the data table below,
a) which of the compounds is most soluble at 25ºC? KI
b) Which of the coumponds has the lowest solubility at 90 ºC? Ce2(SO4)3
c) How many grams of KCl can be dissolved in 200 g of water at 90 ºC? 104 g (can
dissolve 52g in every 100g of water, and we have 200 g water so multiply by 2)