Glass Kerosene

Glass Kerosene

In a way, potassium is a foreign substance, as evidenced by their behavior in response to water. As everyone knows, water tends to extinguish a fire, and most of explosives, when exposed to sufficient quantities of water, become ineffective. Potassium, on the other hand, operates in contact with water and reacts violently with ice at temperatures as low as F? 148 ° (? 100 ° C). In a complete reversal of the procedures normally followed for most substances, potassium is stored in kerosene, as it could burst into flames if exposed to humid air. Many aspects of potassium mirror those with respect to sodium. The two have a number of the same applications, and in certain situations, potassium is used as a substitute for sodium. Such as sodium, potassium is not alone in nature, but comes mainly of sylvite and carnallite, two minerals that contain potassium chloride. In addition, such as sodium, potassium was first isolated by Davy in 1807 using the process of electrolysis. A few years later, a German chemist isolated the new element called "Kali" apparently a derivation of the Arabic Qali, by "alkaline" and therefore the use of K as the chemical symbol for potassium.

Potassium has another similarity with sodium, but was not isolated until the nineteenth century, its compounds have been in use for many centuries. The Romans, for instance, used potassium carbonate, or potash, obtained from the ashes of burned wood, to making soap. During the Middle Ages, the Chinese implemented a form of nitrate, potassium nitrate, in the manufacture of gunpowder. In colonial America, potash entered in making soap, glass and other products. The production of one ton of potash required the burning of several acres worth of trees, a useless in practice more than one sense. Although there was an environmental movement in those days, financial concerns are not fashionable. To save money lost by using up vast areas of timber, American industry in the nineteenth century sought another means of making potash. The many similarities between sodium and potassium provided a key, and the replacement of sodium carbonate, potassium carbonate saved millions of trees.

In 1847, the German chemist Justus von Big Lie (1803-1873) discovered potassium in living tissues. As a result, scientists realized the role it plays in the alkali metals in sustaining of life: in fact, potassium is present in virtually all living cells. In the human body, potassium, representing only 0.4% of body mass is essential for muscle function. In large amounts, however, can be dangerous, causing a permanent state of relaxation known as inhibition potassium. Since plants depend on potassium for growth, it was logical that potassium in the form of potassium chloride, was eventually applied as a fertilizer. This, less, apart from its brothers of the elements sodium or sodium chloride, which can kill plants if the land is administered in large enough quantities. Another application Potassium is found in the area for the first time by the Chinese some 800 years ago: the manufacture of fireworks and gunpowder, potassium nitrate. As the ammonium nitrate, became infamous for its use at the 1993 World Trade Center bombing and the Oklahoma City bombing in 1995, the potassium nitrate is used as a fertilizer.

Most are just three alkali metal household names, though one of them, cesium, have several applications in industry. The rubidium and cesium, discovered in 1860 by chemist German RW Bunsen (1811-1899) and the German physicist Gustav Robert Kirchhoff (1824-1887), were the first items to be found with a spectroscope. The material emits electromagnetic radiation over several spectral lines, which can be recorded using a spectroscope and then analyzed to discern the particular "footprint Digital "of the substance in question. When Bunsen and Kirchhoff saw the blue spectral lines emitted by one of two elements, cesium named after a Latin word meaning "blue sky". Cesium, which is very rare, found mainly in compounds like pollucite. It is used today in photoelectric cells, military infrared lamps, radio tubes, and video equipment. During the 1940s, the American physicist Norman F. Ramsey, Jr. built an atomic clock high precision based on the natural frequencies of the cesium atoms. Rubidium, however, has applications far less, and those are mainly in the areas of scientific research. The Earth is in pollucite, lepidolite and carnallite. It is much more abundant than cesium, and much more than France. In fact, it is estimated that combining all the francium in the crust of the Earth, which would have a mass of about 25 grams. Francium was discovered in 1939 by French physicist Marguerite Perey (1909-1975), pupil of the famous French (1867-1934 Polish chemist and physicist Marie Curie). For nearly four decades, scientists had been looking for the mysterious Element 87, and by studying the decay products of actinium isotope, actinium-227, Perey discovered that one of every 100 atoms of these newly to form the element to be discovered. He called France, after his home-land, France. Although the discovery of francium solve a mystery, the element has no known uses beyond its applications in research.

About the Author:

Dr.Badruddin Khan teaches Chemistry in the University of Kashmir, Srinagar, India.

Article Source: ArticlesBase.comPotassium Vs. Rubidium, Cesium and Francium

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