Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 4 - Reactions in Aqueous Solution - Exercises: 4.35a

Answer

HF is an acid. It will exist as a mixture of molecules and ions.

Work Step by Step

HF is an acid - it will break up into H+ and F-. Looking at table 4.2, it is not a strong acid so therefore it must be a weak acid. Weak acids do not dissociate completely in water so there will be some in the molecular form and some as ions - it will be a mixture.
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