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在实验前,预先收集好一锥形瓶和一烧瓶CO,塞上橡皮塞。将直径为0.3～0.4厘米左右的铜丝一根,一端绕成螺旋状,另一端插在单孔橡皮塞上,备用。 〔实验一〕 打开锥形瓶,马上用火柴点燃,立刻可见CO在锥形瓶口燃烧,火焰成蓝色环状,自上而下,持续近半分钟,燃烧完毕,向锥形瓶中倒入少量石灰水,石灰水变浑浊。
Prior to the experiment, a conical flask and a flask of CO were collected in advance and a rubber stopper was plugged. A copper wire having a diameter of about 0.3 to 0.4 cm is wound one end into a spiral shape, and the other end is inserted into a single-hole rubber stopper and used as a backup. [Experiment 1] Open the Erlenmeyer flask and immediately ignite it with a match. Immediately, it can be seen that the CO is burning in the conical flask mouth. The flame turns into a blue ring. From top to bottom, it lasts for nearly half a minute. It is burned and poured into the Erlenmeyer flask. Into a small amount of lime water, lime water becomes cloudy.