Final answer:
Strong acids are water-soluble and must be neutralized before removal because they are completely ionized in an aqueous solution, making them strong electrolytes and good electrical conductors.
Step-by-step explanation:
Acids that are considered water-soluble and must be neutralized before removing are strong acids. Strong acids are completely ionized in aqueous solution, which means they dissociate into their constituent ions. Examples of strong acids include hydrogen chloride (HCl), which ionizes completely into hydrogen ions (H+) and chloride ions (Cl-) in water. This full ionization makes strong acids good conductors of electricity and strong electrolytes.
On the other hand, weak acids are only partially ionized in water, with common examples being acetic acid found in vinegar. The ionization of acetic acid in water is represented as only a slight disassociation, resulting in fewer ions compared to strong acids. Similarly, the strength of strong acids can vary and is subject to a leveling effect in water, meaning that they all react to form the hydronium ion (H3O+) as the strongest acid that can exist in water. Therefore, any strong acid stronger than hydronium ion will also react completely to generate hydronium ions.