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* Demonstrate that copper chloride solution chemically changes when conducting electricity to produce copper and chlorine gas.
* Inject the cupric chloride solution into the U-shaped branch pipe, insert two graphite carbon rods as electrodes, and place the moistened potassium iodide starch test paper near the anode carbon rod to check the released gas.
* Shortly after the power is turned on, there is a layer of copper covering the surface of the carbon rod used as the cathode, indicating that there is copper precipitation.
* On the anode carbon rod, there are bubbles released. From its odor and the characteristic that it can make the wet potassium iodide starch test paper turn blue, it can be concluded that the gas released is chlorine gas.
* It can be seen that the copper chloride solution is subjected to the action of the current, and chemical changes occur while conducting electricity, and copper and chlorine gas are generated.