On top of the nineteenth century it was the invention of the iot. It is the period in which the French army spent the years of the war of aggression, requires a large amount of black gunpowder that the composition is primarily the consumer surplus from potassium, sulfur and charcoal. Initially the surplus target of potassium are imported from India, but the amount of the surplus target reserve here quickly and runs out to the gunpowder production one must use the surplus target of Chile. Gunpowder made of matchsticks Chilean pepper not inferior to the former gunpowder about the destructive nature but susceptible to humidity, so that doesn't make satisfied war experts. A problem set for the chemist is to transform the Chilean goal matches (NaNO3) as saltpeter decomposes and something that can be resolved if there is a salt of potassium (chloride or carbonate). The time people don't even know the potassium chloride salt mine (until 1858 new-found Xtatfua mines) and potassium salt production and only then K2CO3. People prepared by salt water wash plant ash. In Russia people burned wood to have a large amount of that substance. In the forest, at least get the seaweed offers dried up, and then burn and thuđược K2CO3.In France, too, there is so much research you produce K2CO3 and matchsticks. Among them was Becna Cuoctoa (1977-1838) in the city of Đigiông.cuoctoa.jpgBernard Courtois (1777-1838) [Becna Cuoctoa]He proved to have the observation than those of other marginalized and salt water vapor when he saw appear slightly purple iodine. He does not tell it was a random phenomenon. He repeated several times, and note to rule nature of the phenomenon that its repetition count, thanks to the presence of a new substance did not know always have in salt water and called iodine.Iodine is found in 1811. Cuoctoa main wrote about the event: "water in the lye's prepared from seaweed have fairly large amounts of a substance remarkably exotic. Very easy to separate substances. Want to just pour sunfuaric acid into water and heat the blended average curved neck, connected in a container. New substances to precipitate in the form of black powder and when heat is turned slightly purple so beautiful. That vapor crystallized into pieces of iridescent crystals as the lead sulfide Crystal ". The exotic colors of nature new born help us differentiate it with the substances already known to date and people seen in substance that the special properties make finding out it has a very important meaning.Taking advantage of the wild thing immediately after finding out iodine tablets. In the article "history of the invention of x-rays" posted in "natural" in 1947, Greisitkin has written: "Cuoctoa has two glass bottles; a bottle of he drug packaging made of seaweed ashes and wine. The other bottles contain a solution of iron sulfate. Cuoctoa sit on his shoulders and he has a black cat. Suddenly the cat jump and touch the sulphuric acid bottles placed next to bottles of medication. Two bottles were broken, the liquid mix into each other and a slightly violet blue lick rises from the ground. It is iodine. So which medicine and photography industry must remember to thank the cat about the invention of the iot "If you believe that then the readers would at least can feel pebbles lounge is iot due cat looking out, and the role of the economic and social conditions, the role of humans have created the history just to educate that cat only.Although Cuốctoa is just a matchstick production goals but the ham understanding, patience and has conducted a number of experiments with new substances. He has determined that iodine combined with phosphorus, with a number of metal with hydrogen, it forms an explosive compound with ammonia.New substances at the same time also make two famous chemist is Gay Luytxac and Đêvy are note. They come to the conclusion that the substance is an element has properties very similar to chlorine.In 1813, Gay Luytxac and Đêvy announced the results of their research, Gay luytxac new substances called that is then called Đêvy, longer iot iodin due color of that element slightly (by Greek iođexơ meaning purple flowers). In 1814, Gay-Luytxắc announced a relatively full monograph on the iot that people see as one of the documents that describe the outstanding element. In a move that survey, French chemist had argued about the theory of hidric acids (acid hydrogen as he often calls them), have described meticulously the important compounds of iodine, and comparing them with those of the corresponding chlorine compounds, he demonstrated that chlorine is "iodine".Gay-Luytxắc, Dêvy, and except for a few other scientist proved to very interested in iodine, while the vast majority of other than scientist, among which even the French scientist, who in the same country with Cuốctoa are very indifferent with regard to that invention. It was not until 1911, when the country of Cuốctoa scientist people celebrating the solemn celebration of the centennial of the day invented the iot, the new Cuốctoa, remembered them we Australians took his name to give to the city where he was born.The establishment of the circulatory system, Mendelêep see there really not fit between the atomic weight and chemical properties of iodine atomic weight baby supposed to be folded before it folded right Telu in the box after Telu. Mendelêep's hypothesis about the mistakes of the atomic weight was found where the front was not accepted though the atomic weight that was more scientist try try again several times, including the friends of Mendelêep, Mr. Braone, Professor of the University in Prague. Just today, based on the theory of atomic structure explain the aforementioned exception.
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