一、问题的提出电化学是高中化学知识体系的重要组成部分,对学生提出了比较高的能力要求。在最近电化学的习题讲解中,我们遇到了如图1所示的电解体系,电解质溶液均为滴有无色酚酞的硫酸钠溶液,与外接电源连接的两电极材料均为碳棒,要求写出电解方程式并描述电解现 First, the issue put forward Electrochemistry is an important part of high school chemical knowledge system, put forward a relatively high capacity requirements for students. In the recent electrochemical exercises to explain, we have encountered the electrolysis system shown in Figure 1, the electrolyte solution were dripped with colorless phenolphthalein sodium sulfate solution, and the external power supply connected to the two electrode materials are carbon rod, write Electrolysis equations and describe electrolysis