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关于“氨和氯化氢反应”实验,教材上的如图1所示。该实验所用试剂是浓氨水和浓盐酸,两种试剂都易挥发出有刺激性气味的气体,污染环境,刺激老师和学生的呼吸道,非常不环保。实验改进装置设计的改进实验装置如图2。该装置用一支20mL的注射器和两支5mL的注射器。在20mL注射器的头、尾两端各做一个能伸进5mL的注射器注射端的圆孔。用该装置做实验,具体操作如下:
On the “ammonia and hydrogen chloride reaction ” experiment, the textbook shown in Figure 1. The reagents used in this experiment are concentrated aqueous ammonia and concentrated hydrochloric acid. Both reagents emit volatile odorous gases, which pollute the environment and stimulate the respiratory tract of teachers and students. It is very not environmentally friendly. Experimental improvement device design and improvement of experimental device shown in Figure 2. The device uses a 20 mL syringe and two 5 mL syringes. In the 20mL syringe head and tail ends of the syringe can be made into a 5mL syringe injection side of the hole. Experiment with the device, the specific operation is as follows: