Hydrogen
peroxide
In the childhood, you might easily get wound because of fall down. Did you remember how to treat wounds? My answer is using hydrogen peroxide(雙氧水) to clean the wound. However, not until did I study chemistry that I know how it works. Therefore, I want to make a basic introduction of hydrogen peroxide.
(quoted by http://wiki.eanswers.com/en/Hydrogen_peroxide?ext=t&cid=5036 and http://www.baike.com/wiki/%E5%8F%8C%E6%B0%A7%E6%B0%B4)
Hydrogen peroxide is a colorless liquid
compound with the formula H2O2. As the pictured showed,
it isn’t a plane molecular, but a three dimensional molecular. The most
important property is it will decompose to water and oxygen even without special
situation. In this chemical reaction, the catalyst is the iron(II) ion(亞鐵離子) in the blood or manganese peroxide(二氧化錳).
(adapted by http://modx.hanluninfo.com:8082/modx/index.php?id=6995)
Due to the property above, when the wound
with blood attach the hydrogen peroxide, it will produce a lot of oxygen. With
this oxygen, the germ can be killed easily. This is why we use hydrogen
peroxide to clean the wound.
However, while killing the germ in the wound, the cell to repair the wound is also killed. Therefore, hydrogen peroxide is not always the best choice to clean the wound. Instead, the saline solution(生理食鹽水) is sometimes useful.
However, while killing the germ in the wound, the cell to repair the wound is also killed. Therefore, hydrogen peroxide is not always the best choice to clean the wound. Instead, the saline solution(生理食鹽水) is sometimes useful.
The decomposing reaction of hydrogen peroxide
It felt like disaster as you put hydrogen peroxide on it.
回覆刪除Oh~ How surprising it is!! when I see a lot of bubbles appear, I always feel released because it seems to help me clean my wound. However, I now realize that it does clean my wound and also kill my skin.
回覆刪除This is one of the most interesting experiments in elementary school class!
回覆刪除I knew we can use hydrogen peroxide to clean the wound but I dont know that the reason lies in the oxygen it produces.
I love to watch those bubbles popping on my skin, but it really hurt me......
回覆刪除