Chapter 4.1, Problem 4.7BFP

Interpretation Introduction

Interpretation:

The circle among B, C, and D that best represent the unit volume after $300\text{mL}$ of solvent has been added to circle A is to be identified.

Concept introduction:

Dilution is the process of converting a concentrated solution into a dilute solution by adding the solvent. In the resultant solution, the amount of solute remain fixed but the volume of the solution increases. The moles of solute before and after dilution remain fixed.

The expression to calculate the number of spheres in diluted solution when number of spheres and volume of concentrated solution and volume of diluted solution are given is as follows:

$N_{\text{dil}}=\frac{N_{\text{conc}}{V}_{\text{conc}}}{V_{\text{dil}}}$

Here,

$N_{\text{dil}}$ is the number of sphere present in diluted solution.

$V_{\text{dil}}$ is the volume of diluted solution.

$N_{\text{conc}}$ the number of sphere present in the concentrated solution.

$V_{\text{conc}}$ is the volume of concentrated solution.