Chapter 13, Problem 16QP

Interpretation Introduction

Interpretation:

The amount of water (in g) that should be added to a solute for making a solution of certain concentration is to be evaluated.

Concept introduction:

Percentage by mass is the percentage of the ratio of mass of solute to the mass of solution. It is expressed in parts per hundred. It can be expressed as follows:

$\begin{array}{c}\text{Percentage by mass}=\frac{\text{mass of solute}}{\text{mass of solution}}\times 100\%\\ =\frac{\text{mass of solute}}{\text{mass of solute + mass of solvent}}\times 100\%\end{array}$