我们在过去的教学实验中,测定 Cu-Zn 电池电动势的装置如图1所示,实验中经常出现溶液渗漏,弯形导管中产生气泡,甚至出现多次更换溶液,并影响处理好的电极。为了避免上述情况,笔者设计了一种简单、新颖的测定装置,如图2所示,反应室直径 25mm,高95mm,两室之间的连接管用二片玻璃砂芯隔成一中间室,上有一磨口活塞,加入饱和 KCl 溶液起“盐桥”作 We in the past teaching experiments, the determination of Cu-Zn battery electromotive force device shown in Figure 1, the experiment often appear solution leakage, bending catheter bubble, and even multiple replacement solution, and affect the treatment of the electrode . In order to avoid the above situation, I designed a simple, novel measuring device, shown in Figure 2, the reaction chamber diameter 25mm, height 95mm, the connection between the two rooms with two glass sand core separated by an intermediate chamber, there is a Mill mouth piston, add saturated KCl solution from the “salt bridge” for