Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0321908449
ISBN 13: 978-0-32190-844-5

Chapter 9 - Section 9.2 - Electrolytes and Nonelectrolytes - Questions and Problems - Page 290: 9.7

Answer

A solution of KF contains only ions, while a solution of HF contains both ions and some HF molecules.

Work Step by Step

Strong electrolytes completely dissociate in water. Weak electrolytes only partially dissociate in water, and leave most of their molecules together. Therefore, solutions of weak electrolytes contain both molecules and dissociated ions.
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