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一、硫化氢的合成及其检验的演示实验高中化学甲种本第一册第三章第53页和乙种本上册第三章第46页都有“硫的蒸气能跟氢气直接化合而生成硫化氢气体”的内容,但都没有演示实验。为配合课堂教学,可作硫跟氢直接化合成硫化氢的演示实验。1.仪器装置(见图1)2.实验步骤先取一只试管装配成简易氢气发生器。另取二只具支试管,一管中盛1/3容积的氢氧化钠溶液,另一管中盛硫粉1g,并各配上附有导管的单孔橡皮塞,再用橡皮管将三管相连接。并使整个装置不漏气。
I. Demonstration experiments of the synthesis of hydrogen sulfide and its testing High-grade chemical species A, Chapter 3, Page 53 of the first volume and Chapter 3, Page 46 of the Ethereum, have “Sulfur vapor can be directly combined with hydrogen and generated. The content of hydrogen sulfide gas, but none of the demonstration experiments. In order to coordinate with classroom teaching, demonstration experiments of sulfur and hydrogen direct synthesis of hydrogen sulfide can be made. 1. Instrumentation (see Figure 1) 2. Experimental procedure First, take a tube and assemble it into a simple hydrogen generator. Another two test tubes were used, one containing 1/3 of the volume of sodium hydroxide solution, the other containing 1g of sulfur powder, and each equipped with a single-hole rubber plug with a catheter, and then using a rubber tube. Pipe connected. And make the whole device airtight.