Phase Diagram Worksheet

Name: ______Date: ______Mods: ______

Chapter 10 Review Sheet

Part 1: Vocabulary

Define the following terms, using your class notes, reading guide or text book:

surface tensionamorphous solidadhesiondeposition

capillary actioncrystalline solidcohesionmelting

effusionunit cellcondensationfreezing

diffusionvapor pressureevaporationviscosity

fluidvolatilesublimationtriple point

Part 2: Phase Diagrams

Refer to the phase diagram below when answering the questions:

NOTE: “Normal” refers 1 atm = 101.3 kpa = 760 mmHg

1) What is the normalfreezing point of this substance? ______

2) What is the normal boiling point of this substance? ______

3) What is the normalmelting point of this substance? ______

4) What is the phase (s, l, g) of a substance at 2.0 atm and 100 °C? ______

5) What is the phase (s, l, g) of a substance at 0.75 atm and 100 °C? ______

6) What is the phase (s, l, g) of a substance at 0.5 atm and 100 °C? ______

7) What is the phase (s, l, g) of a substance at 1.5 atm and 50 °C? ______

8) What is the phase (s, l, g) of a substance at 1.5 atm and 200°C? ______

9) What is the phase (s, l, g) of a substance at 1.5 atm and 800°C? ______

10) What is the condition of the triple pointof this substance? T= ______, P= ______

11) If a quantity of this substance was at an initial pressure of 1.25 atm and a temperature of 3000 Cwaslowered to a pressure of 0.25 atm, what phase transition(s) would occur? ______

12) If a quantity of this substance was at an initial pressure of 1.25 atm and a temperature of 00 C was lowered to a pressure of 0.25 atm, what phase transition(s) would occur? ______

13) If a quantity of this substance was at an initial pressure of 1.0 atm and a temperature of 2000 C was lowered to a temperature of -2000 C, what phase transition(s) would occur? ______

14) If a quantity of this substance was at an initial pressure of 0.5 atm and a temperature of 2000 C was lowered to a temperature of -2000 C, what phase transition(s) would occur? ______

15) If this substance was at a pressure of 2.0 atm, at what temperature would it melt? ______

16) If this substance was at a pressure of 2.0 atm, at what temperature would it boil? ______

17) If this substance was at a pressure of 0.75 atm, at what temperature would it melt? ______

18) If this substance was at a pressure of 0.75 atm, at what temperature would it boil? ______

19) At what temperature do the gas and liquid phases become indistinguishable from each other? ______

20) At what pressure would it be possible to find this substance in the gas, liquid, and solid phase?_____

Part 3: Vapor Pressure Diagrams

Use the following diagram to answer question 1-8 below.

1. What is the vapor pressure of A at 35°C? ______

2. What is the vapor pressure of B at 35°C? ______

3. At what temperature is the vapor pressure of A 106.6 kPa? ______

4. What is the vapor pressure of B at this temperature? ______

5. At what temperature is the vapor pressure of B 106.6 kPa? ______

6. What is the “normal” boiling point of A? ______

7. What is the “normal” boiling point of B? ______

8. At what temperature would A boil in Denver where atmospheric pressure is

93.3 kPa?______

The following table shows the vapor pressure of a certain liquid at various temperatures.

Graph the data in the table provided.

1. What effect does rising temperature have on vapor pressure?

3. If atmospheric pressure was hypothetically 96 kPa for this problem, what would be the normal

boiling point of the substance you graphed? ______

4. What would happen to the boiling point of the substance if the external pressure were to increase?

5. How would the cooking time of an egg that is to be hard boiled be affected by high altitude (like in Denver). Explain.