2016年11月16日 星期三

Calcium carbonate

Calcium carbonate

    Some people have the experience that having too much gastric fluid. After seeing a doctor, they may get the medicine, which is called antacids from doctor. Actually, how the medicine works is easy. The medicine, which should be a kind of basic compound just neutralize the hydrogen chloride in your stomach to make you feel better. In this week, I want to introduce one kind of antacids. It is calcium carbonate.

(quoted by http://www.bsimedicalsupply.com/Calcium-Carbonate-Chewable-Antacid-assorted-Flavors-MG-150Btl_p_2296.html and http://iizmar.ee/en/portfolio_item/calcium-carbonate/#prettyPhoto)

    Calcium carbonate is a weak basic compound with the chemical formula CaCO3. You can see it in concrete, rock or shell on animal. In the NTP situation, it is white power or white solid. Besides, it is hard to dissolve in the water, which is an important property for an antacid.


    Being an antacid should be a basic compound to neutralize the hydrogen chloride. What’s more, it shouldn’t be too basic to prevent from hurting the esophagus

. Therefore, we sometimes choose a compound, which is not easy to dissolve in the water. Calcium chloride has both of the properties above. Therefore, it is common to be used in antacids.


How it reacts? 2HCl(aq)+CaCO3(s)àCaCl2(aq)+CO2(g)+H2O(l)

 


 

3 則留言:

  1. Sometimes I think I could just eat marble and get the same results……haha

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