Solutions Review
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____1.A solution of sucrose (sugar) in water is in equilibrium with solid sucrose. If more solid sucrose is now added, with stirring,
a. / the concentration of the solution will increase.b. / the concentration of the solution will decrease.
c. / the concentration of the solution will remain the same.
d. / the volume of solution will increase.
e. / a supersaturated solution will be produced.
____2.Potassium fluoride is used for frosting glass. Calculate the molarity of a solution prepared by dissolving 78.6 g of KF in enough water to produce 225 mL of solution.
a. / 0.304 Mb. / 0.349 M
c. / 1.35 M
d. / 3.29 M
e. / 6.01 M
____3.Calculate the molarity of a solution prepared by diluting 1.85 L of 6.5 M KOH to 11.0 L.
a. / 0.28 Mb. / 0.91 M
c. / 1.1 M
d. / 3.1 M
e. / 3.9 M
____4.What volume of concentrated (14.7 M) phosphoric acid is needed to prepare 25.0 L of 3.0 M H3PO4?
a. / 0.20 Lb. / 0.57 L
c. / 1.8 L
d. / 3.6 L
e. / 5.1 L
____5.Which of the following statements describes the correct method of preparation of 1.00 L of a 2.0 M urea solution? urea = 60.06 g/mol
a. / Dissolve 120 g of urea in 1.00 kg of distilled water.b. / Dissolve 120 g of urea in 880 g of distilled water.
c. / Dissolve 120 g of urea in enough distilled water to produce 1.00 L of solution.
d. / Dissolve 120 g of urea in 1.00 liter of distilled water.
e. / The density of urea is needed in order to do this calculation.
____6.Copper(II) bromide is used as a wood preservative. What mass of CuBr2 is needed to prepare 750.0 mL of a 1.25 M solution?
a. / 134 gb. / 209 g
c. / 372 g
d. / 938 g
e. / > 1 kg
____7.If a crystal added to an aqueous solution causes many particles to come out of the solution, the original solution was ____.
a. / unsaturated / c. / an emulsionb. / saturated / d. / supersaturated
____8.Which of the following substances is less soluble in hot water than in cold water?
a. / CO / c. / NaNOb. / NaCl / d. / KBr
____9.What is the molarity of a solution that contains 6 moles of solute in 2 liters of solution?
a. / 6M / c. / 7Mb. / 12M / d. / 3M
____10.What is the molarity of a solution containing 7.0 moles of solute in 569 mL of solution?
a. / 81M / c. / 12Mb. / 0.081M / d. / 4.0M
____11.What is the molarity of a solution containing 56 grams of solute in 959 mL of solution? (molar mass of solute = 26 g/mol)
a. / 1.5M / c. / 2.1Mb. / 2.2M / d. / 0.0022M
____12.How many mL of a 2.0M NaBr solution are needed to make 200.0 mL of 0.50M NaBr?
a. / 25 mL / c. / 100 mLb. / 50 mL / d. / 150 mL
____13.If the percent by volume is 2.0% and the volume of solution is 250 mL, what is the volume of solute in solution?
a. / 0.5 mL / c. / 5.0 mLb. / 1.25 mL / d. / 12.5 mL
____14.The volume of alcohol present in 620 mL of a 40.0% (v/v) solution of alcohol is ____.
a. / 372 mL / c. / 248 mLb. / 40.0 mL / d. / 580 mL
____15.Two liquids that are soluble in each other in any proportion are said to be:
a. / insoluble / c. / miscibleb. / immiscible / d. / soluble
Short Answer
16.What is the number of moles of solute in 650 mL of a 0.40M solution?
17.The process illustrated is called ______.
18.Calculate the molarity of the solution.
19.What volume, in milliliters, of calcium chloride stock solution would you use to make 0.50 L of 0.300 M of calcium chloride solution?
True/False
Indicate whether the statement is true or false.
____20.Carbonated water is a solution of carbon monoxide in water.
____21.A dilute solution contains large amounts of solute.
Completion
Complete each statement.
22.A measure of the amount of solute dissolved in a specific amount of solvent or solution is called the ______of the solution.
Solutions Review
Answer Section
MULTIPLE CHOICE
1.ANS:C
2.ANS:E
3.ANS:C
4.ANS:E
5.ANS:C
6.ANS:B
7.ANS:D
8.ANS:A
9.ANS:D
10.ANS:C
11.ANS:B
12.ANS:B
13.ANS:C
14.ANS:C
15.ANS:C
SHORT ANSWER
16.ANS:
17.ANS:
Solvation
18.ANS:
0.2 / 0.5 = 0.4 M
19.ANS:
75 ml
V1 = (0.50 L) x 0.300 M / 2.00 M = .075 L = 75 ml
TRUE/FALSE
20.ANS:F
21.ANS:F
22.ANS:concentration