What occurs when the vapor pressure of a liquid is equal to the atmospheric pressure?
- Correct Answer: boiling
- evaporation
- freezing
- melting
Explanation: Recall that boiling occurs when the vapor pressure of a liquid is equal to the atmospheric pressure. Since adding a solute lowers the vapor pressure, we would expect a higher temperature to be required before boiling can begin. This phenomenon, known as boiling point elevation , occurs whenever a solute is dissolved into a pure solvent.
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