Chapter 19, Problem 12TE

To determine

The effect of volume expansion of solvent on concentration.

Answer to Problem 12TE

If volume of the solvent expands after increasing the temperature, the concentration will decrease.

Explanation of Solution

The solution contains a solute component and a solvent component. The concentration of the solution depends on the amount of both of these components.

The concentration of the solution is inversely proportional to the volume of the solution.

If the temperature increases, the volume of the solvent increases. It will increase the volume of the solution. The amount of solute is kept the same.

So, as the volume of solvent increases, the concentration of the solution will decrease as they are inversely proportional.

Conclusion:

Therefore, if volume of the solvent expands after increasing the temperature, the concentration will decrease.