The Element: Chlorine Essay -- essays research papers

The Element centiliter customary In castingationWe reoceanrched the chemical element known as centilitre. atomic number 17 hasan nuclear fig of 17 and an atomic weight of 35.453. It has avalence number of 3. The element has 3 energy levels. centiliter existsas a greenish-yellow bollix up at normal temperatures and pressures. centilitreis second in reactivity solitary(prenominal) to fluorine among the halogen elements.atomic number 17 is a nonmetal. It is estimated that 0.045% of the earthscrust and 1.9% of sea water are chlorine. centilitre combines withmetals and nonmetals and organic materials to form hundreds ofchlorine compounds. Chlorine is about 2.5 times as dense as air and sensibly soluble in water, forming a pale yellowish green solution.Chlorine is so reactive that it never occurs free in nature.Chemical PropertiesChlorine is in the halogen family, and like all the otherhalogen elements chlorine has a industrial-strength tendency to gain one electronand become a chloride ion. Chlorine readily reacts with metals to formchlorides, most of which are soluble in water. Chlorine also reactsdirectly with many nonmetals such as sulfur, phosphorus, and otherhalogens. Chlorine can support combustion if a candle were to be thrown and twistedinto a vessel of chlorine, it would continue to burn, releasing dense,black clouds of smoke, The chlorine combines with heat content of theparaffin, forming hydrogen chloride, and uncombined carbon is left inthe form of soot. crock is black residue from fuel. Chlorine replacesiodine and bromine from their salts. Dry chlorine is nearlywhat inert ornot able to move, but moist chlorine unites directly with most of theelements.HistoryChlorine was discovered in 1774 by Karl Scheele. Humphry Davyproved that chlorine was an element. Extensive production began 100 eld later. During the 20th Century. The amount of Chlorine calld wasconsidered a measure of industrial growth. In, 1975 chlorineproductions ranked seventh o n the list of largest-volume chemicalsproduced in the unite States. The importance of chlorine has changedas newborn uses have been added. In 1925 newspaper and pulp used over one-half . The chlorine made and chemical products only 10%. By the 1960spaper and pulp use accounted for only 15-17% and the chemical usesincreased to 75-80%. Peoples uses have contributed to the growth oflarge cities, and new textiles, plastics, paints, and miscellaneous useshave raise... ...h chlorine. At the iron cathode or negatively aerated electrode,sodium ions are reduced to sodium metal, which reacts immediately withwater to form sodium hydroxide.Another method of preparing chlorine is by the electrolysis ofmolten salt. This do by is used specifically to produce sodium, andthe chlorine is a commercial by product. When large quantities ofwaste hydrochloric and are available. Chlorine may be retrieve byoxidation of the harsh. This method has the advantage of convertinggreat quantities of waste a cid to useful substances.No matter what process is used to prepare chlorine, the plashmust be well dried. Dry chlorine is much little corrosive than moistchlorine gas. In the laboratory chlorine may be prepared by heatingmanganese oxide with hydrochloric acid.ConclusionIn conclusion chlorine is a very wonderful element. Chlorine hashundreds of compounds. If we did not have these compounds we wouldnot have clean water, we would have an insect problem, we could notmake many important compounds that are used in medicine, and some ofthe battles in World War I might have been helpless if it were not forchlorine. Our world would not be the same if not for chlorine.