Answer
According to Arrhenius' definition, an acid is a substance that contains and produces $H^+$ in aqueous solution, a base is a substance that contains the hydroxyl group and produces $OH^-$ in aqueous solutions, and neutralization is the reaction between $H^+$ and $OH^-$ to produce water.
Examples:
Acid: $HBr$
Base: $LiOH$
Neutralization : $H^+(aq) + OH^-(aq) \longrightarrow H_2O$
Work Step by Step
See Section 10-2: "The Arrhenius Theory."
