2.13 Timed Assessments

2.13.1 Concentration Units

Practice

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Answers

Question 1

1. 0.538 M
2. 0.554 m
3. 3.33%
4. 0.00989
5. 0.99
6. 0.990
7. 99.0%

Question 2

1. 5.69 M
2. 6.90 m
3. 30.0%
4. 0.11
5. 11.1%
6. 0.889
7. 88.9%

Question 3

1. 0.562 M
2. 0.584 m
3. 16.7%
4. 0.0104
5. 1.04%
6. 0.990
7. 99.0%

2.13.2 Henry’s Law

Practice

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Answers

1. 7.06 atm
2. 0.156 M
3. 0.703 M atm^–1

Practice

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Answers

1. 2.54 g
2. 18.7 g
3. 102.7 g

2.13.3 Colligative Properties

Practice

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Freezing point depression

Answers

1. -1.87 °C
2. -15.91 °C
3. -2.47 °C

Practice

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Boiling point depression – Use T_b = 0.512 °C for this problem set.

Answers

1. 100.5 °C
2. 104.4 °C
3. 101.4 °C

2.13.4 Osmotic Pressure

Practice

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Assume the temperature to be 25 °C.

Answers

1. 20.4 atm
2. 187.6 atm
3. 28.6 atm

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