Chemistry worksheet featuring a labeled diagram of a simple distillation apparatus used to separate mixtures like seawater.

Problem Analysis:

The image depicts a distillation setup, which is used to separate components of a liquid mixture based on their boiling points. The task involves calculating the volume of water collected in the conical flask after distilling a solution containing ethanol and water.

#### Given Data:
1. Initial Volume of Solution: 50 mL
2. Boiling Point of Ethanol: 78°C
3. Boiling Point of Water: 100°C
4. Temperature at Which Distillation Occurs: 95°C

#### Objective:
Determine the volume of water collected in the conical flask when the solution is distilled at 95°C.

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Step-by-Step Solution:

#### 1. Understanding the Distillation Process:
- Ethanol has a lower boiling point (78°C) compared to water (100°C).
- When the solution is heated to 95°C, ethanol will vaporize first because its boiling point is below 95°C.
- Water, with a boiling point of 100°C, will not vaporize significantly at 95°C and will remain in the round-bottom flask.

#### 2. Behavior of Components at 95°C:
- At 95°C, ethanol will evaporate from the solution and be condensed in the Liebig condenser, eventually collecting in the conical flask.
- Water, being non-volatile at this temperature, will stay in the round-bottom flask.

#### 3. Assumptions:
- The solution is an ideal mixture of ethanol and water.
- The distillation process is efficient, and all ethanol vaporizes at 95°C.
- No water vaporizes at 95°C.

#### 4. Volume of Ethanol Collected:
- Since the solution is distilled at 95°C, only ethanol will be collected in the conical flask.
- The volume of ethanol collected will be equal to the initial volume of the solution because the entire solution (50 mL) is assumed to consist of ethanol (since water does not vaporize at this temperature).

#### 5. Volume of Water Remaining:
- Since no water vaporizes at 95°C, all the water remains in the round-bottom flask.
- Therefore, the volume of water collected in the conical flask is 0 mL.

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Final Answer:

The volume of water collected in the conical flask is:
\[
\boxed{0}
\]