在三种常用的实验室制取氧气方法中,用加热方法分解氯酸钾制取氧气和分解高锰酸钾制取氧气所需的仪器完全一样,唯一的区别就是用高锰酸钾制取氧气时,试管口要塞一团棉花;而用氯酸钾制取氧气时,试管口就不需要放棉花。 In the three commonly used laboratory oxygen production method, the decomposition of potassium chlorate by heating method to obtain oxygen and decomposition of potassium permanganate oxygen to obtain the required equipment exactly the same, the only difference is that when using potassium permanganate oxygen , A test tube mouth fortress a group of cotton; and use potassium chlorate to make oxygen, test tube mouth does not need to put cotton.