卡尔·威廉·舍勒(Carl Wilhelm Schele,1742—1786)研究空气时,认为普通空气分浊空气、火空气,即后来的氮和氧。他采用了许多方法来制备火空气,如将水银烧渣加热、黑锰(二氧化锰)同硫酸或砷酸一起加热;硝石单独地强烈地加热等。我们通常制备氧气,可以加热高锰酸钾(俗称灰锰氧,紫黑色晶体,药房中出售。家庭一般用于消毒灭菌)、或氯 When Carl Wilhelm Schele (1742-1786) studied air, it was assumed that ordinary air was divided by dull air, fire air, and later nitrogen and oxygen. He used a number of methods to prepare fire air, such as heating mercury cinders, heating black manganese (manganese dioxide) together with sulfuric acid or arsenic, and saltpetre heating alone and the like. We usually produce oxygen, which can be heated potassium permanganate (commonly known as gray manganese oxide, purple black crystals, sold in pharmacies. Households generally used for disinfection and sterilization), or chlorine