Why does adding a solute to a solvent raise the boiling point of the solution?

Answer 1

A nonvolatile ( not readily evaporated) solute elevates the boiling point of a solvent

(the temperature at which the solvent boils) because its presence lowers the vapor pressure of the solvent.

* The normal boiling point of a liquid occurs at the temperature where the vapor pressure is equal to 1 atmosphere.

* The presence of a nonvolatile solute decreases the number of solvent molecules per unit volume , so less molecules escape form the liquid. Thus the vapor pressure of the solvent decreases. * Therefore, such a solution with lower vapor pressure must be heated to a higher temperature than the boiling point of the pure solvent to reach a vapor pressure of 1 atmosphere.

Answer 2

Solutes are typically solid. Being a solid means having a higher boiling point in the first place, so the boiling point of a solution will be roughly related to the proportion by mass of solute to solvent in the solution. Thus, a higher proportion of solvent means a boiling point closer to that of the solute, and vice versa (less means closer to the solvent's).

Answer 3

It's boiling point is higher than 100.

edit: Solutes form bonds with the water molecules, sometimes just Van der Waal bonds. These bonds hold the water molecules together and they require more energy to break the bond, thus the increase in the boiling point. Conversely, adding solute can prevent the formation of a crystalline structure, thereby lowering the melting point.

Answer 4

This is because you are getting the solid solute closer to a liquid state which allows it to mix with its liquid solvent easier.

Answer 5

when the solvent got crazier then solute it becomes angri, red and hot so it raise its boiling point..

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