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高中化学新课程选修4“电化学基础”部分,有下面四个问题在教学中常常使学生迷惑。为满足部分学生的好奇心,可以适当向他们做些解释,以开拓其视野。一、“盐桥”的作用是什么?有“盐桥”的原电池正极材料的选择有何讲究?常用原电池中有盐桥吗?原电池负极和能与其反应的电解质直接接触的话,
High school chemistry courses elective 4 “Electrochemical Basis ” section, the following four questions in teaching often confuse students. In order to satisfy the curiosity of some students, they can be properly explained to them to broaden their horizons. First, “Salt Bridge ” What is the role? Have “Salt Bridge ” of the original battery cathode material selection What is the stress? Common primary battery salt bridge it? The original battery negative electrode and can react with the electrolyte directly When in contact,