An acid–base titration is a titration whose active components are hydrogen ions (H⁺) and hydroxide ions (OH⁻), used to determine the concentration of an acid or a base. The stoichiometric point is reached when the acid and base have been combined in their reacting ratio. An indicator whose colour change matches the pH at that point is used to locate the endpoint.

酸碱滴定是活性组分为氢离子(H⁺)和氢氧根离子(OH⁻)的滴定,用于测定酸或碱的浓度。当酸与碱按其反应比例结合时即达到化学计量点。使用变色范围与该点 pH 相匹配的指示剂来确定终点。