Acetic Acid and Sodium Hydroxide Neutralization

概述

Acetic acid (vinegar) reacts with sodium hydroxide to form sodium acetate and water. Because acetic acid is a weak acid (Ka = 1.8 × 10⁻⁵), the resulting solution is slightly basic at the equivalence point due to acetate ion hydrolysis. The heat of neutralization is slightly less than for strong acid-strong base pairs.

参与者

日常示例

Sodium acetate is used in hand warmers and hot ice demonstrations, where a supersaturated solution crystallizes exothermically.

工业重要性

乙酸钠用作食品防腐剂(E262)、纺织工业原料,以及作为污水处理中生物脱氮除磷的碳源。