A mixture contains calcium chloride dissolved in ethanol. A student needs to separate this mixture to obtain a pure, dry sample of solid calcium chloride and a pure sample of liquid ethanol.
The table below shows the boiling points of calcium chloride and ethanol.
| Substance | Boiling point in °C |
|---|---|
| Calcium chloride | 1935 |
| Ethanol | 78 |
Explain this difference in boiling points in terms of the structure and bonding of calcium chloride and ethanol. Explain how this difference in boiling points is used to select and carry out an experimental method to separate the mixture into pure, dry calcium chloride and pure ethanol.
