Using the phase diagram to the right: a. Label each phase in the diagram to the right in the box provided. b. What is the normal melting and normal boiling points? P atm 49.8 What is the phase change associated with letter A when the pressure is suddenly dropped? 1.00 0.00150 A. 54.4 54.8 B T Kelvin 90.2 154.6

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### Exercise on Phase Diagrams

Using the phase diagram to the right:

a. **Label each phase in the diagram to the right in the box provided.**

b. **What is the normal melting and normal boiling points?**

c. **What is the phase change associated with letter A when the pressure is suddenly dropped?**

d. **What singular change can you do to letter B to vaporize it?**

e. **What is happening on the molecular level for your answer in part D to work?**

f. **What is the vapor pressure of this substance at approximately 80K?**

#### Phase Diagram Explanation

- **Axes**: The diagram is a plot with Pressure (P) in atm on the y-axis and Temperature (T) in Kelvin on the x-axis.
  
- **Lines and Points**: 
  - A line separates distinct phases marked as A and B.
  - Phase A appears at low temperatures and high pressures.
  - Phase B is found at higher temperatures, transitioning to point Q.
  - Point Q is at approximately 154.6 Kelvin, where one of the phase boundaries ends.

- **Phase Boundaries**:
  - The diagram displays the phase equilibrium between different states of matter.
  - Specific points depicted include 54.4 K and 154.6 K.
  
Understanding the details of this graph can help describe the transitions between solid, liquid, and gaseous phases under different conditions. Analyze where lines intersect the axes to determine normal boiling/melting points and how pressure impacts phase changes.
Transcribed Image Text:### Exercise on Phase Diagrams Using the phase diagram to the right: a. **Label each phase in the diagram to the right in the box provided.** b. **What is the normal melting and normal boiling points?** c. **What is the phase change associated with letter A when the pressure is suddenly dropped?** d. **What singular change can you do to letter B to vaporize it?** e. **What is happening on the molecular level for your answer in part D to work?** f. **What is the vapor pressure of this substance at approximately 80K?** #### Phase Diagram Explanation - **Axes**: The diagram is a plot with Pressure (P) in atm on the y-axis and Temperature (T) in Kelvin on the x-axis. - **Lines and Points**: - A line separates distinct phases marked as A and B. - Phase A appears at low temperatures and high pressures. - Phase B is found at higher temperatures, transitioning to point Q. - Point Q is at approximately 154.6 Kelvin, where one of the phase boundaries ends. - **Phase Boundaries**: - The diagram displays the phase equilibrium between different states of matter. - Specific points depicted include 54.4 K and 154.6 K. Understanding the details of this graph can help describe the transitions between solid, liquid, and gaseous phases under different conditions. Analyze where lines intersect the axes to determine normal boiling/melting points and how pressure impacts phase changes.
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