Shanxian Chemical
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Hydrogen Peroxide Decomposition Experiment
Experiment on decomposition of peroxide
Experimental background
Everything in the world changes, and the wonders of chemistry lie in the reaction. Although the decomposition of peroxide is invisible and colorless, it contains scientific principles. Exploring its changes can reveal the laws of nature and be used by future generations.
Purpose of the experiment
The purpose of the experiment
is to investigate the mystery of the decomposition of hydrogen peroxide, observe the phenomenon of its reaction, understand the change of its rate, and understand how different factors affect this reaction. In order to obtain the true meaning of the reaction, it will contribute to the study of chemistry.
Experimental material
Prepare hydrogen peroxide solution, which is the foundation of the reaction; find manganese dioxide powder, which can be used as a catalytic agent to change the rate of chemical reaction; take several clean test tubes as a reaction vessel; prepare alcohol lamps and matches for heating; more need a measuring cylinder, dropper, etc., to accurately measure the medicine.
Experimental steps
1. Take an appropriate amount of hydrogen peroxide solution in a measuring cylinder and pour it into a clean test tube. Looking at its state, it is colorless and transparent, like a clear spring. Quiet, no abnormal changes were seen.
2. Take a little manganese dioxide powder with a spoon and gently sprinkle it into the test tube containing the hydrogen peroxide solution. In an instant, bubbles appear in the solution, like a spring, which is the appearance of oxygen generation.
3. Take another test tube, measure the same amount of hydrogen peroxide solution, and place it on an alcohol lamp to slowly heat. After a while, bubbles are also seen to form, but the rate is slower than that of adding manganese dioxide.
4. Take a wooden strip with Mars and place it at the mouth of the test tube where the gas is produced. See the re-ignition of the wooden strip, the gas generated by this certificate is oxygen.
5. Add different concentrations of hydrogen peroxide solution dropwise to the test tube with a dropper, and observe the difference in the reaction rate. At higher concentrations, bubbles are produced more violently and the reaction rate is faster.
Experimental Conclusion
After this experiment, it can be seen that hydrogen peroxide can be decomposed to produce oxygen. Manganese dioxide is an efficient catalyst, which can significantly accelerate its decomposition rate. And heating can also decompose hydrogen peroxide, but the efficiency is not as good as that of the catalyst. At the same time, the concentration of hydrogen peroxide solution has a great influence on the reaction rate. The higher the concentration, the faster the reaction rate. This experiment revealed the law of hydrogen peroxide decomposition reaction, which laid the foundation for future chemical research and application.
Experimental background
Everything in the world changes, and the wonders of chemistry lie in the reaction. Although the decomposition of peroxide is invisible and colorless, it contains scientific principles. Exploring its changes can reveal the laws of nature and be used by future generations.
Purpose of the experiment
The purpose of the experiment
is to investigate the mystery of the decomposition of hydrogen peroxide, observe the phenomenon of its reaction, understand the change of its rate, and understand how different factors affect this reaction. In order to obtain the true meaning of the reaction, it will contribute to the study of chemistry.
Experimental material
Prepare hydrogen peroxide solution, which is the foundation of the reaction; find manganese dioxide powder, which can be used as a catalytic agent to change the rate of chemical reaction; take several clean test tubes as a reaction vessel; prepare alcohol lamps and matches for heating; more need a measuring cylinder, dropper, etc., to accurately measure the medicine.
Experimental steps
1. Take an appropriate amount of hydrogen peroxide solution in a measuring cylinder and pour it into a clean test tube. Looking at its state, it is colorless and transparent, like a clear spring. Quiet, no abnormal changes were seen.
2. Take a little manganese dioxide powder with a spoon and gently sprinkle it into the test tube containing the hydrogen peroxide solution. In an instant, bubbles appear in the solution, like a spring, which is the appearance of oxygen generation.
3. Take another test tube, measure the same amount of hydrogen peroxide solution, and place it on an alcohol lamp to slowly heat. After a while, bubbles are also seen to form, but the rate is slower than that of adding manganese dioxide.
4. Take a wooden strip with Mars and place it at the mouth of the test tube where the gas is produced. See the re-ignition of the wooden strip, the gas generated by this certificate is oxygen.
5. Add different concentrations of hydrogen peroxide solution dropwise to the test tube with a dropper, and observe the difference in the reaction rate. At higher concentrations, bubbles are produced more violently and the reaction rate is faster.
Experimental Conclusion
After this experiment, it can be seen that hydrogen peroxide can be decomposed to produce oxygen. Manganese dioxide is an efficient catalyst, which can significantly accelerate its decomposition rate. And heating can also decompose hydrogen peroxide, but the efficiency is not as good as that of the catalyst. At the same time, the concentration of hydrogen peroxide solution has a great influence on the reaction rate. The higher the concentration, the faster the reaction rate. This experiment revealed the law of hydrogen peroxide decomposition reaction, which laid the foundation for future chemical research and application.
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