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How does the presence of a non-volatile solute in a solvent affect...
How does the presence of a non-volatile solute in a solvent affect the vapor pressure of the solution at a given temperature?
Options
- AIt increases the vapor pressure.
- BIt has no effect on the vapor pressure.
- CIt decreases the vapor pressure.
- DIt depends on the nature of the solute.
Correct answer
C. It decreases the vapor pressure.
Step-by-step solution
The paragraph explains that when a non-volatile solute is added to a solvent, the vapor pressure of the resulting solution is lower than the vapor pressure of the pure solvent at the same temperature.