The following solvent selection data were collected for an impure sample of solid compound, unknown X (mp = 70 C) Solvent Solubility at RT Solubility at BP Crystals upon Cooling Hexanes (bp = 68°C) Insoluble Soluble Many Chloroform (bp = 61°C) Soluble Soluble Very few %3D Ethyl Acetate (bp = 77°C) Insoluble Insoluble %3D Propanol (bp = 97°C) Insoluble Insoluble Ethanol (bp = 78°C) %3D Insoluble Soluble Many Water (bp = 100°C) %3D Insoluble Soluble Very few

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The following solvent selection data were collected for an impure sample of a solid compound, unknown X (mp = 70°C).

| Solvent                      | Solubility at RT | Solubility at BP | Crystals upon Cooling |
|------------------------------|------------------|------------------|-----------------------|
| **Hexanes (bp = 68°C)**      | Insoluble        | Soluble          | Many                  |
| **Chloroform (bp = 61°C)**   | Soluble          | Soluble          | Very few              |
| **Ethyl Acetate (bp = 77°C)**| Insoluble        | Insoluble        |                       |
| **Propanol (bp = 97°C)**     | Insoluble        | Insoluble        |                       |
| **Ethanol (bp = 78°C)**      | Insoluble        | Soluble          | Many                  |
| **Water (bp = 100°C)**       | Insoluble        | Soluble          | Very few              |

Based on these results, what solvent would you choose for your recrystallization? Explain your answer.

### Explanation:
For the recrystallization process, the ideal solvent is one in which the compound is insoluble at room temperature (RT) and soluble at or near its boiling point (BP), with a significant amount of crystals formed upon cooling. According to the presented data:

- **Hexanes** and **Ethanol** both show these properties:
  - Hexanes: Insoluble at RT, soluble at BP, and many crystals form upon cooling.
  - Ethanol: Insoluble at RT, soluble at BP, and many crystals form upon cooling.

Given these results, either hexanes or ethanol would be a suitable choice for the recrystallization of the impure sample of solid compound X. However, the choice between hexanes and ethanol can be further refined based on other factors such as safety, cost, and environmental impact.
Transcribed Image Text:The following solvent selection data were collected for an impure sample of a solid compound, unknown X (mp = 70°C). | Solvent | Solubility at RT | Solubility at BP | Crystals upon Cooling | |------------------------------|------------------|------------------|-----------------------| | **Hexanes (bp = 68°C)** | Insoluble | Soluble | Many | | **Chloroform (bp = 61°C)** | Soluble | Soluble | Very few | | **Ethyl Acetate (bp = 77°C)**| Insoluble | Insoluble | | | **Propanol (bp = 97°C)** | Insoluble | Insoluble | | | **Ethanol (bp = 78°C)** | Insoluble | Soluble | Many | | **Water (bp = 100°C)** | Insoluble | Soluble | Very few | Based on these results, what solvent would you choose for your recrystallization? Explain your answer. ### Explanation: For the recrystallization process, the ideal solvent is one in which the compound is insoluble at room temperature (RT) and soluble at or near its boiling point (BP), with a significant amount of crystals formed upon cooling. According to the presented data: - **Hexanes** and **Ethanol** both show these properties: - Hexanes: Insoluble at RT, soluble at BP, and many crystals form upon cooling. - Ethanol: Insoluble at RT, soluble at BP, and many crystals form upon cooling. Given these results, either hexanes or ethanol would be a suitable choice for the recrystallization of the impure sample of solid compound X. However, the choice between hexanes and ethanol can be further refined based on other factors such as safety, cost, and environmental impact.
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