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Testing Hydrogen Peroxide in Water
Test of hydrogen peroxide in water
If you want to know whether the water contains hydrogen peroxide, you should follow certain methods. First, prepare a clean container, take an appropriate amount of water to be tested and put it in it. Second, put a little manganese dioxide in the water. If the water contains hydrogen peroxide, it will react when encountering manganese dioxide, and it can be seen that there are bubbles escaping. For this bubble, oxygen is also. Under the catalysis of manganese dioxide, hydrogen peroxide decomposes to produce water and oxygen. Looking at the emergence of bubbles, it can be proved that there is hydrogen peroxide in the water; if there are no bubbles, there may be no such substance in the water, but caution must be taken, or the content is too small to show its appearance.
To determine the content of hydrogen peroxide, you can use another titration method. Take a certain amount of water sample, acidify it with sulfuric acid, and then drop it with a solution of potassium permanganate of known concentration. Hydrogen peroxide reacts with potassium permanganate in an acidic environment, and its color gradually fades from purple to red. When the color of the solution is exactly reddish and does not fade within half a minute, remember the amount of potassium permanganate solution used. According to the stoichiometric relationship of the reaction, the content of hydrogen peroxide in water can be calculated.
The inspection of hydrogen peroxide in water is crucial in many fields. In medicine, it is related to the purity and safety of water; in industry, it affects the quality of products and the smooth production. Therefore, accurate inspection should be carried out in a rigorous manner.
If you want to know whether the water contains hydrogen peroxide, you should follow certain methods. First, prepare a clean container, take an appropriate amount of water to be tested and put it in it. Second, put a little manganese dioxide in the water. If the water contains hydrogen peroxide, it will react when encountering manganese dioxide, and it can be seen that there are bubbles escaping. For this bubble, oxygen is also. Under the catalysis of manganese dioxide, hydrogen peroxide decomposes to produce water and oxygen. Looking at the emergence of bubbles, it can be proved that there is hydrogen peroxide in the water; if there are no bubbles, there may be no such substance in the water, but caution must be taken, or the content is too small to show its appearance.
To determine the content of hydrogen peroxide, you can use another titration method. Take a certain amount of water sample, acidify it with sulfuric acid, and then drop it with a solution of potassium permanganate of known concentration. Hydrogen peroxide reacts with potassium permanganate in an acidic environment, and its color gradually fades from purple to red. When the color of the solution is exactly reddish and does not fade within half a minute, remember the amount of potassium permanganate solution used. According to the stoichiometric relationship of the reaction, the content of hydrogen peroxide in water can be calculated.
The inspection of hydrogen peroxide in water is crucial in many fields. In medicine, it is related to the purity and safety of water; in industry, it affects the quality of products and the smooth production. Therefore, accurate inspection should be carried out in a rigorous manner.
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