Chapter 8, Problem 70P

Interpretation Introduction

Interpretation:

The solution that is most concentrated and the one that is least concentrated should be identified.

Concept introduction:

The extent of a concentrated solution is determined by the number of particles of solute present in a fixed amount of solvent. The solution that has a greater number of moles or a number of particles in a given amount of solvent has greater concentration.

For solutions, the concentration is often described in terms of molarity. Theexpression for molarity is given as follows:

  $\text{Molarity}\left(\text{mol/L}\right)=\frac{\text{number of moles}}{\text{volume}\left(\text{L}\right)}$

This formula indicates that for a fixed volume of solvent, the greater is the number of moles, the greater is the molarity or the concentration of the solution.