论文部分内容阅读
〔目的〕验证在其它条件不变的情况下,增大压强,可以加快气态物质的化学反应速度。〔原理〕2H_2S+SO_2=3S_+2H_2O 常温下,硫化氢气体和二氧化硫气体反应会有浅黄色硫生成,但压强不同生成浅黄色硫的速度不同,从而证明增加压强,可以加快气态物质的化学反应速度。〔准备〕用二只集气瓶分别收集硫化氢和二氧化硫气体备用。〔演示〕用二只150毫升的注射器同时吸入约60毫升的硫化氢气体,再同时吸入约30毫升的二氧化硫气体,将注射器细端管口连接的细橡皮管夹紧即密封,然后将一只注射器的活(?)压缩到体积为40毫升左右,半分钟后即有浅黄色硫生成,而作对照的另一只注射器并无明显的
[Objective] To verify that, under other conditions unchanged, increasing the pressure can speed up the chemical reaction of gaseous substances. 〔Principle〕 2H_2S + SO_2 = 3S_ + 2H_2O At room temperature, the reaction of hydrogen sulfide gas and sulfur dioxide gas will produce light yellow sulfur, but different pressure produces different rates of light yellow sulfur, which proves that increasing pressure can accelerate the chemical reaction of gaseous substances speed. [Preparation] Collect hydrogen sulfide and sulfur dioxide gas separately with two gas collection cylinders. Demonstration Simultaneous inhalation of approximately 60 ml of hydrogen sulfide gas with two 150 ml syringes and simultaneous inhalation of approximately 30 ml of sulfur dioxide gas, clamping the thin rubber tube connected to the fine tube end of the syringe tightly, sealing one, Syringe live (?) Compressed to a volume of about 40 ml, half a minute after the light yellow sulfur formation, and the other syringe as a control and no obvious