论文部分内容阅读
一、实验改进目的将NaOH与CO_2的反应现象放大,以喷泉形式呈现。既验证了两者之间的反应,又增加了实验的趣味性。二、实验仪器及用品圆底烧瓶、尖嘴玻璃管、胶头滴管、烧杯、止水夹、铁架台。稀盐酸、大理石、烧碱、水。三、实验装置实验装置见图1。四、实验操作步聚1.圆底烧瓶事先收集满CO_2气体。胶头滴管内吸取一定量的Na0H溶液。烧杯中倒人Na0H溶液并滴入几滴酚酞。按图1所示组装好仪器。
First, the purpose of experimental improvement The reaction of NaOH and CO 2 amplification phenomenon, presented in the form of a fountain. Not only verified the reaction between the two, but also increased the fun of the experiment. Second, the experimental equipment and supplies Round-bottomed flask, beak glass tube, plastic head dropper, beaker, water clip, Tiegui Taiwan. Dilute hydrochloric acid, marble, caustic soda, water. Third, the experimental device Experimental device shown in Figure 1. Fourth, the experimental operation Polymerization 1. Round bottom flask collected in advance CO 2 gas. Plastic pipette pipette a certain amount of Na0H solution. Beaker pour Na0H solution and drip a few drops of phenolphthalein. Assemble the instrument as shown in Figure 1.