高锰酸钾 + 醋 Potassium Permanganate + Vinegar

实验描述 Experiment Description

高锰酸钾是紫色的粉末，有强氧化性，常用来消毒。醋是酸性的，一跟高锰酸钾混起来，氧化效果就打折扣，还会生出些沉淀物，看着脏，用不了还浪费。

Potassium permanganate is a purple powder with strong oxidizing properties, commonly used for disinfection. Vinegar is acidic, and mixing it with potassium permanganate will reduce the oxidation effectiveness and produce some precipitate, making it appear dirty and wasteful when it cannot be used properly.