高中課本第二册17頁,佈置了一氧化氮氧化及二氧化氮溶解的演示实驗:收集一氧化氮在長玻筒中,放入空气,观察棕色二氧化氮的生成,再倒置水中,由於二氧化氮的溶解,水就徐徐升入筒中,用以說明硝酸的生成。可是当 High school textbook second book 17 pages, the layout of the nitric oxide oxidation and nitrogen dioxide dissolution demonstration experiment: collection of nitric oxide in the long glass tube, into the air to observe the formation of brown nitrogen dioxide, and then inverted water, due to two Dissolved nitric oxide, the water slowly into the cylinder, to illustrate the formation of nitric acid. But when