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氯气有毒 ,为了师生的健康和减少环境污染 ,在做氯气性质实验时 ,可以在封闭体系内进行 ,效果很好。如氯气与钠和磷的反应实验 ,如图 1所示 ,将磷或钠放在燃烧匙内 (放钠时在燃烧匙上铺一层河沙 ) ,用止水夹夹住橡胶导管 ,点燃磷或钠后伸入盛有氯气的集气瓶中 ,塞紧橡胶塞 ,反
Chlorine is toxic. For the sake of teacher-student health and environmental pollution reduction, it can be performed within a closed system when it is used as a chlorine gas property test. The effect is very good. For example, the reaction of chlorine with sodium and phosphorus, as shown in Figure 1, place the phosphorus or sodium in a burning spoon (place a layer of river sand on the burning spoon when putting sodium), and clamp the rubber tube with a water stop clip to light it. Phosphorus or sodium penetraws into a cylinder containing chlorine gas and plugs the rubber stopper.