How to Use Electrolyzed Water to Produce Oxygen at Home

I did the experiment at home. Of course the most convincing. Haha

First, you need to find salts like sodium sulfate (table salt won't work) to increase the conductivity of the water.

Then you need to find two pencil leads as electrodes and put them in two gas bottles filled with water (metal electrodes are not very effective, especially do not use iron wire)

Connect the circuit with wires, put two gas collection bottles filled with water and containing electrodes upside down in a large basin filled with water, and turn on the power, bubbles will be generated. Be sure to use DC power. The best voltage is 5V-9V. Ordinary dry batteries will not work (this electrolysis process uses a lot of power).

Then you will get oxygen at the positive electrode!

I don't know how to draw a picture here, youcan refer to the middle school chemistry book