对白磷燃烧实验的改进

Improvement of White Phosphorus Combustion Experiment

由于白磷的燃点低，在自然条件下能够与氧气发生剧烈的氧化反应，使得通过白磷的燃烧来研究物质燃烧的条件操作困难，任何不慎操作都会使实验失败甚至威胁到实验人员的安全。因此设计了将白磷放置于可控制氧气流速的实验装置中，人工控制氧气的流速并能确定反应温度，较好地解决了上述操作难题，该方法直观、简便、危险性小，并能使学生容易推导出物质燃烧的条件。

White phosphorus could react with oxygen under natural conditions because of its low ignition temperature, so the experiment was difficult to operate to study the combustion con- ditions of substance through the combustion of white phosphorus. This paper designed the experimental device which could control the flow rate of oxygen, solving the above operation problem, the experimental method was intuitive, simple and less risk, and students could easily derive the combustion conditions of substance.