Electroplating Copper:
A Live Demonstration Electroplating is a fascinating process that allows us to deposit a thin layer of metal onto a surface using electrical currents. In this experiment, copper is plated onto a working electrode, creating a visible transformation in real time. Using a potentiostat—essentially a controlled power supply—the demonstration begins with setting up the electrodes and preparing a copper sulfate solution. The solution contains copper ions, which will be reduced into solid copper during the electroplating process. A small volume of 50 microliters of copper sulfate is applied to the electrode, and a voltage of -700 millivolts is set for a deposition time of approximately 240 seconds. As the experiment progresses, the copper ions move toward the cathode (working electrode), where they gain electrons and form a thin layer of copper metal. This transformation is observable under a microscope, revealing a distinct color change from black to orange as the copper deposits onto the electrode. One of the key advantages of this small-scale setup is its accessibility—it requires only minimal amounts of solution and low voltages, making it an educational and safe experiment suitable for classroom demonstrations. The process is visualized in real time, allowing for a deeper understanding of electroplating at the microscopic level. If you’re interested in learning more or seeing additional experiments, feel free to reach out to Zimmer Peacock for further insights!
