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第一要诀:弄清实验室制取氧气的原理在实验室里,通常采用加热分解氯酸钾或高锰酸钾的方法制取氧气。反应的文字表达式如下:氯酸钾氯化钾+氧气高锰酸钾锰酸钾+二氧化锰+氧气共同点:两个化学反应都是分解反应,且都需要
The first tip: to clarify the principle of oxygen production in the laboratory In the laboratory, oxygen is usually prepared by heating and decomposing potassium chlorate or potassium permanganate. The textual expression of the reaction is as follows: potassium chlorate potassium chloride + oxygen potassium permanganate potassium manganate + manganese dioxide + oxygen