Which of the following is typically found in the formula of an acid?

• A. OH
• B. Oxide
• C. H
• D. Hydroxide

Answer: (C)

Verified step by step guidance

1. Understand that acids are substances that increase the concentration of hydrogen ions (H\textsuperscript{+}) when dissolved in water.
2. Recall that the general formula of an acid often includes hydrogen atoms that can be released as H\textsuperscript{+} ions.
3. Recognize that the presence of OH (hydroxide) groups is characteristic of bases, not acids.
4. Note that oxides are compounds containing oxygen and another element, and are not specifically indicative of acids.
5. Conclude that the key component typically found in the formula of an acid is the hydrogen atom (H), which can dissociate to produce H\textsuperscript{+} ions.