Properties of Solutions

1

Chemistry The Central Science, 10th
edition Theodore L. Brown, H. Eugene LeMay, Jr.,
and Bruce E. Bursten
Chapter 13 Properties of Solutions
Todd Austell, The University of North Carolina ?
2006, Pearson Prentice Hall
2

1. Yes, because any addition of solid to liquid
   significantly changes the entropy.
2. Yes, because of the energy required to make the
   AgCl dissolve.
3. No, because the AgCl is not dispersed throughout
   the liquid phase.

3

1. Yes, because any addition of solid to liquid
   significantly changes the entropy.
2. Yes, because of the energy required to make the
   AgCl dissolve.
3. No, because the AgCl is not dispersed throughout
   the liquid phase.

4

1. Yes
2. No

5

1. Yes
2. No

6

1. The solubility would be about the same in water
   as the solubility of glucose.
2. The solubility would be lower in water than the
   solubility of glucose.
3. The solubility would be higher in water than the
   solubility of glucose.

7

1. The solubility would be about the same in water
   as the solubility of glucose.
2. The solubility would be lower in water than the
   solubility of glucose.
3. The solubility would be higher in water than the
   solubility of glucose.

8

1. Gases are emitted from the cooking pot surfaces
   as it is heated.
2. Dissolved gases are less soluble in solution as
   temperature increases.
3. Water molecules begin to enter the gas phase to
   stimulate boiling.
4. Boiling actually begins on a small scale at
   temperatures below the boiling point.

9

1. Gases are emitted from the cooking pot surfaces
   as it is heated.
2. Dissolved gases are less soluble in solution as
   temperature increases.
3. Water molecules begin to enter the gas phase to
   stimulate boiling.
4. Boiling actually begins on a small scale at
   temperatures below the boiling point.

10

1. 23 ppm
2. 2.3 ppm
3. 230 ppm
4. 2300 ppm

11

1. 23 ppm
2. 2.3 ppm
3. 230 ppm
4. 2300 ppm

12

1. This question cannot be answered without
   additional concentration information.
2. Yes
3. No

13

1. This question cannot be answered without
   additional concentration information.
2. Yes
3. No

14

1. mole fraction
2. molality
3. molarity
4. mass percent

15

1. mole fraction
2. molality
3. molarity
4. mass percent

16

1. Yes, always
2. Not necessarily yes if i 1 for the solute, no
   if i gt 1 for the solute (if it dissociates).
3. No

17

1. Yes, always
2. Not necessarily yes if i 1 for the solute, no
   if i gt 1 for the solute (if it dissociates).
3. No

18

1. The 0.5 m solution is hypotonic with respect to
   the 0.20 m solution.
2. The 0.20 m solution is hypotonic with respect to
   the 0.5 m solution.

19

1. The 0.5 m solution is hypotonic with respect to
   the 0.20 m solution.
2. The 0.20 m solution is hypotonic with respect to
   the 0.5 m solution.

20

1. Solvent information must be known to compare
   osmotic pressures.
2. They would have the same osmotic pressure.
3. A 0.10 M solution of KBr has a higher osmotic
   pressure than a 0.10 M solution of NaCl.
4. A 0.10 M solution of NaCl has a higher osmotic
   pressure than a 0.10 M solution of KBr.

21

1. Solvent information must be known to compare
   osmotic pressures.
2. They would have the same osmotic pressure.
3. A 0.10 M solution of KBr has a higher osmotic
   pressure than a 0.10 M solution of NaCl.
4. A 0.10 M solution of NaCl has a higher osmotic
   pressure than a 0.10 M solution of KBr.

22

1. The stearate helps the oil droplets bind to the
   container walls.
2. The smaller droplets are separated from one
   another by stearate micelles.
3. The smaller droplets carry negative charges
   because of the embedded stearate ions and thus
   repel one another.
4. The sodium stearate causes the oil to decompose.

23

1. The stearate helps the oil droplets bind to the
   container walls.
2. The smaller droplets are separated from one
   another by stearate micelles.
3. The smaller droplets carry negative charges
   because of the embedded stearate ions and thus
   repel one another.
4. The sodium stearate causes the oil to decompose.