Chlorine gas has been used in the production of many solvents but it was not until 1915 during World War 1 that the german army used chlorine gas as a chemical weapon. It has a melting point of -155°c and a boiling point of -100°c. It is located in Group 17 as a non metal yellow gas with a pungent smell familiar with swimming pools at room temperature. It took many years before Humphrey Davy concluded that the new gas discovered was a new element, he named it Chlorine after the Greek ‘Chloros’ meaning yellow green. Chlorine was first produced by Carl Wilhelm Scheele in 1774 when he reacted Manganese dioxide with hydrochloric acid, at the time he did not know the name of these chemicals and instead named them as the alchemical forms of pyrolusite and spiritus salis. It is also used in the production of many plastics such as PVC and also the production of insecticides and solvents. Due to its high reactivity, it is commonly found in nature bonded to many different elements. It is very reactive and is widely used for many purposes, such as as a disinfectant. It is used in swimming pools commonly and also making drinking water safe by killing bacteria. Name: chlorine Symbol: Cl Atomic number: 17 Atomic weight: 35.45 State: gas Group, period, block: 17, 3, p Color: pale yellow-green gas Classification: halogen Electron configuration: 3s2 3p5 Physical properties Density 293 K:: 3.214 g/cm-3 Melting point: 171.6 K, -101.5 C, -150.7 F Boiling point: 239.11 K, -34.04 C, -29. Chemistry of Fluorine (Z9) The Manufacture of Chlorine Chlorine is a halogen in group 17 and period 3. It is a non metal with the symbol Cl.Ĭhlorine much like other Halogens has antiseptic properties. It has the atomic number 17 in the periodic table and belongs in Group 17, the Halogens. Chlorine (Cl) exists as a yellow green gas with a pungent smell.
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