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高中化学第一册P87[实验4—5]把少量盐酸分别加入盛着碳酸钠和碳酸氢钠的两支试管内。比较它们放出二氧化碳的快慢程度。对此实验笔者作了一点改进。1 实验装置 实验装置见附图。2 实验操作 1.分别在两具支试管中装入少量或等量碳酸钠、碳酸氢钠固体,且在支管处扎上两个大小相同的未充气的气球,再与已注满稀盐酸的锥形瓶通过导管等按图进行组装。
High School Chemistry Booklet P87 [Experiment 4-5] A small amount of hydrochloric acid was added to two tubes containing sodium carbonate and sodium bicarbonate, respectively. Compare how fast they release carbon dioxide. The author of this experiment has made some improvements. 1 Experimental device See experimental device in the attached drawing. 2 Experimental Procedure 1. Load two small test tubes with equal amounts of sodium carbonate and sodium bicarbonate solids, and place two unfilled balloons of the same size at the branch, and fill them with dilute hydrochloric acid. Erlenmeyer flasks are assembled by a catheter or the like as shown in the figure.