You make a solution of a nonvolatile solute with a liquid
solvent...

Question

You make a solution of a nonvolatile solute with a liquid
solvent. Indicate if each of the following statements is true
or false. (d) The boiling point of the solution increases in 
proportion to the concentration of the solute.

Accepted Answer

Hey everyone, we're asked to identify the following statement as true or false. The boiling point of a solution prepared by dissolving a non volatile salute in a volatile solvent is lower than the boiling point of the pure solvent. Now we've learned that the solute particles will distribute evenly in our solution and these solute particles will replace the solvent molecules on the surface of the solution. So this means our solution will have a smaller number of solvent particles on our surface than our pure solvent. And since we have evaporation taking place, this means that our vapor pressure of our solution will be less than our vapor pressure of our pure solvent. Now relating this to our boiling point, we know that our boiling point is inversely proportional to our vapor pressure. So since our vapor pressure of our solution is less than our vapor pressure of our pure solvent, this means our boiling point of our solution must be higher than the boiling point of our pure solvent. And because of this relationship, our statement here is going to be incorrect and we can fix this statement by changing this term into higher. So I hope that made sense and let us know if you have any questions

You make a solution of a nonvolatile solute with a liquid solvent. Indicate if each of the following statements is true or false. (d) The boiling point of the solution increases in proportion to the concentration of the solute.

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