What elements does acid contain?

Answer 1

Acid is not a single substance. Rather acids are a group of compounds generally characterized by the production of Hydronium ions (H3O+) in water. Nearly all acids contain hydrogen but can include a wide varity of other elements.

Answer 2

Acids typically contain hydrogen ions (H+). They are defined as substances that donate protons (H+) in chemical reactions. Acids can also contain non-metal elements like sulfur, chlorine, or carbon.