Item Description
Let students understand the process of producing hydrogen and oxygen after water is energized, so as to verify that water is composed of hydrogen and oxygen. This instrument has a reasonable structure and is convenient to use.
1. Structure:
Plastic container electrode gas nozzle and other components.
2. How to use:
Pour water into the plastic container to the 0 mark position and connect to the DC 12V power supply. There are bubbles overflowing on both sides of the container. The positive pole of the power supply is (oxygen) and the negative pole is (hydrogen). After a few minutes, the ratio of the gas produced by the positive electrode to the gas produced by the negative electrode is 1:2 (2120=power on=2H2↑+02↑).
Conclusion: In order to verify the hydrogen and oxygen, students can follow the teacher’s guidance according to the characteristics of hydrogen and oxygen (oxygen can be used to reignite wood sticks with sparks, and hydrogen can be burned. (If there is too little hydrogen, it may only There is a "flutter" sound, it will not burn). It is concluded that water is composed of two elements, hydrogen and oxygen.
Three, matters needing attention
In order to enhance the conductivity of water, a small amount of dilute sulfuric acid or sodium hydroxide solution can be added to the water, which can speed up the production of hydrogen and oxygen. After use, the container should be cleaned and stored in the cool.
Package included
1pcs
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