THINKING LIKE AN ENGINEER W/ACCESS
17th Edition
ISBN: 9781323522127
Author: STEPHAN
Publisher: PEARSON C
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Chapter 10, Problem 3RQ
- 3. A phase diagram for carbon and platinum is shown. Assuming the lines shown are linear, we can say the mixture has the following characteristics:
- Below 1700°C, it is a mixture of solid platinum and graphite.
- Above 1700°C, there are two possible phases: a liquid (L) phase and a liquid (L) + graphite phase. The endpoints of the division line between these two phases are labeled on the diagram.
Use the workbook provided to determine the phase of a mixture, given the temperature and carbon content.
| A | B | C | D | E | |
| 1 | |||||
| 2 | |||||
| 3 | Maximum Temperature for Pt + G | 1700 | [oC] | ||
| 4 | |||||
| 5 | |||||
| 6 | |||||
| 7 | Temperature (T) [oC] |
Carbon content (c) [%] |
Temp between L & L+G |
Phase | |
| 8 | |||||
| 9 | 854 | 42 | |||
| 10 | 564 | 20 | |||
- a. Write the equation to describe the temperature of the dividing line between the liquid (L) region and the liquid (L) 1 graphite region in column C. Reference the carbon content found in column B as needed. Add any absolute reference cells you feel are needed to complete this calculation.
- b. Write the conditional statement to determine the phase in column D. For simplicity, call the phases Pt + G, L, and L + G. For points on the line, YOU can decide which phase they are included in.
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Chapter 10 Solutions
THINKING LIKE AN ENGINEER W/ACCESS
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