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| Name: | Royanname  | | E-Mail: | battery650 126.com | | Homepage: | http://www.large-battery.com | | Time: | 06/25/2012 at 4:16am (UTC) | | Message: | Discovery of Lithium
Dr. Doug Stewart
Lithium was discovered before Johan Arfvedson in 1817, during an scrutiny of petalite
(LiAlSi4O10).
He organize the petalite contained ¡°silica, alumina and an alkali.¡± (1)
The recent alkali metal in the petalite had unique properties.
It required more acid to undo it than sodium and its carbonate was only sparingly soluble in unworkable šC unlike sodium carbonate.
The imaginative alkali differed from potassium because it did not persuade a hasty with tartaric acid.
Arfvedson tried to mount a untainted swatch of the recent metal sooner than electrolysis, but he was ineffective; the battery he used was not powerful enough. (2)
The sanitary metal was sequestered the following year sooner than both William Brande and Humphry Davy working independently.
Davy obtained a skimpy total of lithium metal on electrolysis of lithium carbonate. (3)
He notable the strange particular had a red glow color a certain extent like strontium and produced an alkali solution when dissolved in water.
In days less safety-conscious than the now, Brande said of lithium, ¡°its solution tastes acrid like the other stationary alkalies.¡± (4)
By 1855 Robert Bunsen and Augustus Matthiessen were independently producing the metal in large quantities not later than electrolysis of molten lithium chloride.
Lithium¡¯s label is derived from the Greek facts ¡®lithos¡¯ interpretation, ¡®stone.¡¯ |
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