Question

An Arrhenius acid is a substance that gives ions in an aqueous solution.

• A. ${\text{OH}}^{-}$
• B. ${\text{H}}^{+}$
• C. ${\text{H}}^{-}$

Answer 1

The correct option is B ${\text{H}}^{+}$

The first chemical definition of an acid and a base was put forward by Svante Arrhenius.

He stated that an acid is a substance that releases ${\text{H}}^{+}$ ions in an aqueous solution.
${\text{H}}^{+}$ ions do not exist independently and they combine with water molecules to form ${\text{H}}_3{\text{O}}^{+}$ or hydronium ions.

He stated that a base is a substance that gives hydroxide or ${\text{OH}}^{-}$ ions in an aqueous solution.