Assume that you have two beakers. One is filled with pure water (blue) and the other contains sugar water (green). Which of the following drawings a, b, or c best represents the two beakers after they have been left to evaporate for two days. 2 days ? Pure Water Sugar Water (a) (b) (c)
Assume that you have two beakers. One is filled with pure water (blue) and the other contains sugar water (green). Which of the following drawings a, b, or c best represents the two beakers after they have been left to evaporate for two days. 2 days ? Pure Water Sugar Water (a) (b) (c)
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:### Evaporation of Pure Water and Sugar Water
#### Understanding the Concept:
Imagine you have two beakers. One is filled with pure water (colored blue) and the other contains sugar water (colored green). Over a period of two days, water from both beakers will begin to evaporate. The challenge is to determine which of the given scenarios best depicts the state of the beakers after two days have passed.
#### Experimental Setup:
- **Beaker 1:** Filled with Pure Water (Blue)
- **Beaker 2:** Filled with Sugar Water (Green)
- Duration: 2 days
The image shows the initial state of the beakers and asks which of the following scenarios, labeled as (a), (b), or (c), best represents the condition of the two beakers after two days.
#### Potential Outcomes:
1. **Outcome (a):**
- Both beakers show a significant decrease in the volume of liquid, but both liquids remain at the same level.
2. **Outcome (b):**
- The volume of the blue liquid (pure water) shows a noticeable reduction compared to the green liquid (sugar water).
3. **Outcome (c):**
- The blue liquid (pure water) shows no reduction in volume while the green liquid (sugar water) level remains the same.
#### Graphical Representation:
- **Initial State:**
- The beaker with pure water is completely filled with blue-colored liquid.
- The beaker with sugar water is completely filled with green-colored liquid.
- **After 2 Days:**
- **(a):** Blue and green liquids are at equal levels, but both reduced in volume.
- **(b):** The blue liquid level is lower than the green liquid level.
- **(c):** Both blue and green liquids remain at the same level as initially.
### Analysis:
When water evaporates, it leaves behind any solutes (sugar in this case). Pure water will evaporate more quickly compared to sugar water, because the presence of sugar lowers the vapor pressure of the solution. Hence, the correct scenario should show the pure water beaker losing more volume than the sugar water beaker.
### Correct Answer:
- The drawing labeled **(b)** best represents the two beakers after they have been left to evaporate for two days.
#### Explanation:
- **Beaker with Pure Water (Blue):
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