以往制取一氧化碳，常用甲酸与浓硫酸共热，制取不便，且其原理不易为初三学生接受。现改为高锰酸钾与木炭（用石棉隔离以保安全）制取一氧化碳简便易行。用制得的一氧化碳还原氧化钢，现象明显（附图）。实验步骤1．把大试管A直立，加入2匙高锰酸钾，放入一团石棉，再小心加1 In the past, carbon monoxide was prepared, and common formic acid and concentrated sulfuric acid were used together to make inconvenience, and the principle was not easily accepted by junior high school students. It is now easy to make carbon monoxide from potassium permanganate and charcoal (isolated with asbestos for safety). Carbon monoxide was used to reduce the oxidation of steel, the phenomenon is obvious (drawing). Experimental steps 1. Hold the large test tube A upright, add 2 spoons of potassium permanganate, put in a group of asbestos, and then carefully add 1