Le livre d'or

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le livre d'or

Rowlwayclemal

- 25/06/2012

Invention of Lithium
Dr. Doug Stewart
Lithium was discovered by Johan Arfvedson in 1817, during an inquiry of petalite
(LiAlSi4O10).

He found the petalite contained ¡°silica, alumina and an alkali.¡± (1)

The new alkali metal in the petalite had unique properties.

It required more acid to delete it than sodium and its carbonate was no greater than sparingly soluble in water ¨C unlike sodium carbonate.

The imaginative alkali differed from potassium because it did not persuade a reckless with tartaric acid.

Arfvedson tried to produce a sterling sampling of the unique metal sooner than electrolysis, but he was ineffective; the battery he occupied was not effectual enough. (2)

The sanitary metal was isolated the following year on both William Brande and Humphry Davy working independently.

Davy obtained a small sum of lithium metal close to electrolysis of lithium carbonate. (3)

He noted the stylish ingredient had a red heartthrob color a certain extent like strontium and produced an alkali colloidal suspension when dissolved in water.

In days less safety-conscious than the now, Brande said of lithium, ¡°its solution tastes acrid like the other unfluctuating alkalies.¡± (4)

By way of 1855 Robert Bunsen and Augustus Matthiessen were independently producing the metal in substantial quantities at hand electrolysis of molten lithium chloride.

Lithium¡¯s respect is derived from the Greek confab ¡®lithos¡¯ intention, ¡®stone.¡¯

le livre d'or

iminialia

Rowlwayclemal

iminialia

iminialia

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