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How will the vapor pressure of a solution compare to the pure solvent?

2 Answers

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When a solute is added to a solvent, the vapor pressure of the solvent (above the resulting solution) is lower than the vapor pressure above the pure solvent.

The vapor pressure of the solvent above a solution changes as the concentration of the solute in the solution changes (but it does not depend on the identity of either the solvent or the solute(s) particles (kind, size or charge) in the solution).

User Ioneyed
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The answer is: The vapor pressure will be lower.

The vapor pressure of a solution containing a nonvolatile solute is less than that of the pure solvent.

The pressure exerted by saturated vapor is called vapor pressure.

In solution, only the solvent molecules are volatile.

Fewer molecule will vaporize, because there are fewer solvent molecules on the surface of the solution than on the surface of the pure liquid.

User Prateek Narendra
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