-8 -10 Time (minutes) Using the cooling curve (shown above), identify the freezing temperature for the solution. 6°C 0°C -8°C -8.5°C -9°C ( Prev 5 of 14 Next >
-8 -10 Time (minutes) Using the cooling curve (shown above), identify the freezing temperature for the solution. 6°C 0°C -8°C -8.5°C -9°C ( Prev 5 of 14 Next >
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:### Temperature versus Time Analysis
#### Graph: Temperature vs. Time
The graph presented shows the relationship between temperature (in °C) and time (in minutes). The y-axis represents the temperature, scaling from -10°C to 24°C. The x-axis represents time, ranging from 0 to 18 minutes.
**Description:**
1. At the start (0 minutes), the temperature is approximately 24°C.
2. As time progresses, the temperature decreases steadily.
3. Around 8 minutes, the temperature stabilizes at approximately -8°C, indicating a phase where the temperature remains constant.
4. After around 14 minutes, the temperature begins to decrease again, indicating the freezing process might be completing.
#### Question:
**Using the cooling curve (shown above), identify the freezing temperature for the solution.**
- 6°C
- 0°C
- -8°C
- -8.5°C
- -9°C
Based on the cooling curve shown in the graph, the correct answer is:
- **-8°C**
The freezing point is identified by the horizontal portion of the curve where the temperature remains constant, indicating the phase change from liquid to solid.
#### Navigation:
- **Previous** (Slide 5 of 14)
- **Next**
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This content provides an intermediate-level understanding of phase changes, specifically focusing on how to read a cooling curve and determine the freezing point of a solution.
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