论文部分内容阅读
浓H2SO4H2C2O4NaOH溶液初中化学课本对一氧化碳的可燃性、氢气的燃烧及氢气与空气的混合气体爆炸两个实验只作了梗概的叙述,本文拟详述这两个实验的具体做法。一、一氧化碳的可燃性实验1.制备一氧化碳(1)取5克左右草酸晶体放入小烧瓶内,再注入25毫升左右的浓硫酸,按图1所示的装
The textbooks of concentrated H2SO4H2C2O4NaOH solution for junior high school chemistry only describe the flammability of carbon monoxide, the combustion of hydrogen gas, and the mixed gas explosion of hydrogen and air. This article details the specific practices of these two experiments. First, the carbon monoxide flammability test 1. Preparation of carbon monoxide (1) Take 5 grams of oxalic acid crystals into a small flask, and then injected about 25 ml of concentrated sulfuric acid, according to Figure 1 installed