利用手持技术探究石墨电极电解水的实验

Experiment of Electrolysis of Water With Graphite Electrode Based on Hand-Held Technique

石墨电极是中学电化学实验中常用的一种惰性电极,但其在电解水实验中造成氧气体积偏小和石墨阳极更易损耗的原因目前还不清楚。利用手持技术探究石墨电极电解水的实验,并深入研究造成偏差的原因。实验结果表明石墨电极对氢气吸附能力大于氧气,阳极电解产生的自由基与石墨反应是造成气体体积偏差和阳极损耗的主要原因。

Graphite electrode is a kind of inert electrode commonly used in middle school electrochemical experiment,but the cause of small oxygen volume and the loss of graphite anode is unclear.The experiment uses hand-held technology to explore the phenomenon of graphite electrode electrolysis of water,and further study of the cause of deviation experiment results.The experiment shows that the graphite electrode for hydrogen adsorption capacity is better,and graphite anode electrolysis produce free radicals reaction is the main cause of deviation and anode loss.