1. CHEMISTRY AN INTRODUCTION TO GENERAL, ORGANIC, AND BIOLOGICAL CHEMISTRY CRS “Clicker” Questions Chapter 7 Solutions
Eleventh Edition
Nancy Gardner

2. CHAPTER 7: SOLUTIONS A. vinegar is the solute; water is the solvent
7.1 Vinegar is solution that contains approximately 4 g acetic acid in 100 mL of water. Identify the solute and solvent in this solution of vinegar.
A. vinegar is the solute; water is the solvent
B. water is the solute; vinegar is the solvent
C. acetic acid is the solute; water is the solvent
D. water is the solute; vinegar is the solvent
Answer: C

3. CHAPTER 7: SOLUTIONS A. KOH in water B. ammonia (NH3) in water
7.2 Which of the following aqueous solutions will be a strong electrolyte?
A. KOH in water
B. ammonia (NH3) in water
C. ethanol (C2H5OH) in water
D. sugar (C12H22O11) in water
Answer: A

4. CHAPTER 7: SOLUTIONS A. unsaturated B. saturated C. supersaturated
7.3 Salt is added to cold water until no more dissolves and a small amount of salt sits on the bottom of the solution. This is called a(n) ________ solution.
A. unsaturated
B. saturated
C. supersaturated
D. dilute
Answer: B

5. CHAPTER 7: SOLUTIONS A. 1.1 M B. 0.19 M C. 5.27 M D. 6.5 M
Calculate the molarity of a 5.8-L solution that contains 65 g of NaCl.
A M
B M
C M
D M
Answer: B

6. CHAPTER 7: SOLUTIONS A. 12 mL B. 6 mL C. 100 mL D. 15 mL
Determine the volume of H2O needed to dilute 15 mL of a 5.0% (m/v) solution to a final concentration of 3.5% (m/v).
A. 12 mL
B. 6 mL
C mL
D. 15 mL
Answer: B

7. CHAPTER 7: SOLUTIONS A. 1.0 moles KOH in 3.0 L water
Identify the solution with the lowest freezing point.
A moles KOH in 3.0 L water
B moles AlCl3 in 3.0 L water
C moles CH3OH in 3.0 L water
D moles NaCl in 3.0 L water
Answer: B

8. CHAPTER 7: SOLUTIONS A. KOH B. NaCl C. NH3 D. Ca3(PO4)2
7.7 Which of the following solutes will NOT be soluble in cold water?
A. KOH
B. NaCl
C. NH3
D. Ca3(PO4)2
Answer: D

9. CHAPTER 7: SOLUTIONS
Which of the following solutions is not unsaturated?
A. a sugar cube that completely dissolves when added to a cup of coffee
B. a crystal added to a solution that does not change in size
C. adding 25.0 g KCl to g water
D. adding 11.0 g NaNO3 to 25.0 g water
Answer: B

10. CHAPTER 7: SOLUTIONS A. 114 g B. 228 g C. 314 g D. 482 g
7.9 If the solubility of sodium nitrate is 114 g/100 g H2O at 50 °C, how many grams of sodium nitrate will dissolve in 275 g of water at 50 °C?
A g
B g
C g
D g
Answer: C 10

11. CHAPTER 7: SOLUTIONS A. 46.6 mL of alcohol B. 57.7 mL of alcohol
A mouthwash contains 22.5% alcohol by volume. If the bottle of mouthwash contains mL, what would be the volume in milliliters of the alcohol?
A mL of alcohol
B mL of alcohol
C mL of alcohol
D mL of alcohol
Answer: D

12. CHAPTER 7: SOLUTIONS A. 0.5 L B. 1.0 L C. 1.5 L D. 2.0 L
A patient needs g of glucose in the next 12 hours. The number of liters of a 5.0% (m/v) glucose solution that must be given is which of the following?
A L
B L
C L
D L
Answer: D

13. CHAPTER 7: SOLUTIONS A. 0.25 M glucose B. 0.50 M glucose
7.12 What is the molarity of 2.0 moles of glucose in 4.0 L solution?
A M glucose
B M glucose
C M glucose
D M glucose
Answer: B

14. CHAPTER 7: SOLUTIONS A. 10.9 g B. 4.83 g C. 13.8 g D. 20.7 g
7.13 How many grams of KCl are needed to prepare 150. g of a 7.25% (m/m) solution?
A g
B g
C g
D g
Answer: A 14

15. CHAPTER 7: SOLUTIONS A. 353 mL B. 114 mL C. 202 mL D. 618 mL
7.14 How many milliliters of water must be added to 265 mL of a 1.75 M HCl solution to dilute it to M, assuming the volumes are additive?
A mL
B mL
C mL
D mL
Answer: A 15

16. CHAPTER 7: SOLUTIONS A. saline solution B. dextrose solution
7.15 Which of the following solutions can be classified as a suspension?
A. saline solution
B. dextrose solution
C. milk of magnesia
D. lemon water
Answer: C 16