Chapter 17, Problem 119A

Interpretation Introduction

Interpretation: The property of water that makes it impossible to find pure water in nature is to be found.

Concept Introduction: Water is called a universal solvent as it can dissolve most substances in it, unlike any other liquid. This is because of its polarity and ability to form hydrogen bonds.

Explanation of Solution

Water with a chemical formula of ${\text{H}}_2\text{O}$ contains two $\text{O-H}$ . Oxygen being more electronegative withdraws the electron density towards itself leading to a partial negative charge on it. Due to this hydrogen atom develops a partial positive charge which leads to polarity in water molecules. This polarity helps water to form an electrostatic attraction with polar molecules and ions and thus water can dissolve most of the substances.

As water on its course, dissolves many substances, it is impossible to find pure water in nature.