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高一化学(甲种水)[实验2—3]是氯气跟氢气化合的演示实验。按教材要求操作,成功率较低。我们改进后的操作,经三年在十八个教学班试验,没有一次失败。具体操作介绍如下: 取150毫升集气瓶,用排饱和食盐水法,先收集氢气,紧接着收集氯气。它们的体积之比取1:1～2。然后将盛混和气的集气瓶移到强日光下,再颠到过来,气体自行混
High one chemistry (a water) [experiment 2-3] is a demonstration experiment of chlorine and hydrogen compound. According to the requirements of teaching materials, the success rate is low. Our improved operation, after three years of experimenting in 18 teaching classes, failed without any success. Specific operations are as follows: Take 150 ml gas collection bottle, with a row of saturated salt water method, first to collect hydrogen, followed by collection of chlorine. Their volume ratio of 1: 1 ~ 2. Then the mixed gas collection bottle moved to strong sunlight, and then Britain over, the gas mix on their own