Chapter 21, Problem 47R

To determine

To Explain: The term dilute solution is used but not the precise solution.

Explanation of Solution

Introduction:

A solution containing small amount of solute is categorised as dilute and when it contains a large amount of solute, it is categorised as concentrated.

The concentration of a solution is expressed by calculating the percentage by volume of solute.

  $\frac{Volumeofsolute}{Volumeofsolution}\times 100\%=\%byvolumeofsolute$

For example: 20% of aqueous alcohol can be prepared as follows:

  $\frac{20mL\mathrm{alcohol}}{(20mL\mathrm{alcohol})+(80mLwater)}\times 100\%=20\%byvolumeof\mathrm{alcohol}$

Thus, a dilute solution has a small amount of solute in the solvent. But it is not specifically mentioned that how much small amount of solute is in the given solution. A precise solution contains a specific amount of solute.