---
title: "A student prepares a dilute water-treatment solution by adding a small amount of solid \\(\\text{MgCl}_2\\) to a large excess of water. The solid dissolves completely. Each diagram represents the particles produced from one formula unit of \\(\\text{MgCl}_2\\), and only the water molecules nearest the ions are shown.  Which particulate diagram best represents the relative placement of the dissolved ions and the dominant ion-dipole orientations of the nearest water molecules?"
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url: "https://nerd-notes.com/ubq/119455/"
date_modified: "2026-08-19T12:40:29+00:00"
---

# A student prepares a dilute water-treatment solution by adding a small amount of solid \(\text{MgCl}_2\) to a large excess of water. The solid dissolves completely. Each diagram represents the particles produced from one formula unit of \(\text{MgCl}_2\), and only the water molecules nearest the ions are shown.

Which particulate diagram best represents the relative placement of the dissolved ions and the dominant ion-dipole orientations of the nearest water molecules?

A student prepares a dilute water-treatment solution by adding a small amount of solid \(\text{MgCl}_2\) to a large excess of water. The solid dissolves completely. Each diagram represents the particles produced from one formula unit of \(\text{MgCl}_2\), and only the water molecules nearest the ions are shown.

Which particulate diagram best represents the relative placement of the dissolved ions and the dominant ion-dipole orientations of the nearest water molecules?

- **A.** Diagram A
- **B.** Diagram B
- **C.** Diagram C
- **D.** Diagram D

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119455/*