Animated pictures of the principles and dangers of 37 chemical reactions---Luminol glows
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principle: Luminol (3-aminophthaloylhydrazide) is a commonly used luminescent chemical reagent. In demonstration experiments, a solution of hydrogen peroxide and a hydroxide base (such as sodium hydroxide) is generally used as the initiator, and an iron-containing compound is used to catalyze the decomposition of hydrogen peroxide. Luminol reacts with hydroxide to generate a double negative ion, which can react with oxygen produced by the decomposition of hydrogen peroxide to generate excited state 3-aminophthalic acid. When it returns to the ground state, it emits blue light. file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml7472\wps1.png(图片来自：wikipedia)花絮：估计不少人都是从刑侦剧或者推理小说中听说鲁米诺试剂的，如果将上述反应中的催化剂换成血液中的铁，这也就成了一个检测痕量血迹的反应。危险：较低，需要留意氢氧化物和双氧水的腐蚀性。录制者：bkrieg564
Danger: Lower, you need to pay attention to the corrosiveness of hydroxide and hydrogen peroxide.