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How does adding a non-volatile solute to a pure solvent affect the vapor pressure of the pure solvent?

The solvent's vapor pressure will increase.

The solvent's vapor pressure will decrease.

The solvent's vapor pressure will not be affected.

The solvent's vapor pressure will most likely change, but not in a predictable way.


To make a 2.0 M solution, how many moles of solute must be dissolved in 0.50 liters of solution?


0.25 moles solute


0.50 moles solute


1.0 mole solute


2.0 moles solute



Answer :

Answer 
How does adding a non-volatile solute to a pure solvent affect the vapor pressure of the pure solvent?

Answer The third option The solvent's vapor pressure will not be affected.

To make a 2.0 M solution, how many moles of solute must be dissolved in 0.50 liters of solution?

Answer C. 1.0 mole solute.