University:
High School
Course:
High School Chemistry
Academic year:

2020
Views:

65

Pages:

2
Author:

Arturo V

Review of Phase Diagram Worksheet Name: Answer Key Date: #1 For each of the questions on this worksheet, refer to the phase diagram for mysterious compound X. Pressure (atm) #2 On the phase diagram below: (a) Label areas of Gas, Liquid, Solid Find the following data: T (K) P (atm) Triple point 140 0.01 atm Normal melting point 150 1 atm Normal boiling point 280 1 atm Critical point 450 3.5 atm (b) What changes in phase will occur if this substance is slowly compressed at constant temperature, from 0.01 atm to 3.5 atm at: 100 K: deposition 150 K: deposition & condensation and freezing 300 K: condensation 500 K: no phase change, always a gas (c) What are the necessary conditions for this material to sublime? Pressures below 0.01 atm and temperatures less than 140 K #3 Construct the phase diagram for a substance on the axes below based on the following data: (It need NOT be to scale) Triple point 55 K 0.10 atm Normal melting point 68 K 1 atm Normal boiling point 183 K 1 atm Critical point 218 K 50 atm Label: S, L, G areas Lines of equilibrium between solid and gas, liquid and gas, solid and liquid.