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具支试管是在普通试管的基础上安一个支管而形成的,其可以进行洗气,还可以组装简易的启普发生器。除了这些基本的功能以外,具支试管还可用于许多化学实验中,尤其适用于反应物为固→液、反应过程不需加热、制取少量气体时。而借助具支试管进行此类微型实验正是具支试管的优势所在。一、碳酸钠和碳酸氢钠与盐酸反应的比较碳酸钠和碳酸氢钠都能与盐酸反应放出二氧化碳,反应
A test tube is formed on the basis of an ordinary test tube with a branch tube, which can be used to purge gas and can also be used to assemble a simple Capillary generator. In addition to these basic functions, a test tube can be used in many chemical experiments. It is especially suitable for solid to liquid reactants, and does not require heating during the reaction to produce a small amount of gas. With the help of a test tube for such micro-experiments it is the advantage of a test tube. First, the sodium carbonate and sodium bicarbonate and hydrochloric acid compared with sodium bicarbonate and sodium bicarbonate reaction with hydrochloric acid release of carbon dioxide, the reaction