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Rubidium: Rubidium Chloride Heated with Calcium in an Iron Boat in Vacuum (Hackspill, Thorpe 1912)
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Rubidium: Rubidium Chloride Heated with Calcium in an Iron Boat in Vacuum (Hackspill, Thorpe 1912)

Calcium takes the chlorine from rubidium chloride when heated in vacuum, and the rubidium, being very volatile, distils away from the boat. Result: silver-white rubidium (sp. gr. 1.52, melts at 38.5 °C). It oxidises fast in air and burns in water. Source: Thorpe, Dictionary of Applied Chemistry vol. 4 (1912), p. 596, after Hackspill (Compt. rend. 1905). Not given: amounts and temperature. Picture drawn by Youblob.
Hejuru
1 day

Amabwiriza

1

Charge the iron boat

Put rubidium chloride and metallic calcium in an iron boat. Ours: set the boat in a porcelain tube.

Ibikoresho by'iyi ntambwe:

Kolorayide ya rubidiyumuKolorayide ya rubidiyumu1 as required

Ibikoresho bikenewe:

KalisiyumuKalisiyumu
Ubwato bw'icyumaUbwato bw'icyuma
Umuyoboro wa PorcelaineUmuyoboro wa Porcelaine
2

Heat in vacuum

Evacuate and heat. Ours: a vacuum pump and a tube furnace.

Ibikoresho bikenewe:

Pompe ikuramo umwukaPompe ikuramo umwuka
Itanura ry'umuyoboroItanura ry'umuyoboro
3

Distil off the metal

Distil the rubidium off. Ours: let it condense in the cool end of the tube and keep it under kerosene.

Ibikoresho bikenewe:

Umuyoboro wa PorcelaineUmuyoboro wa Porcelaine
PeteroliPeteroli

Ibikoresho

1

Ibikoresho bikenewe

6

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Rubidiyumu

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Rubidium Chloride: Lepidolite Lithia Residue Parted with Platinic Chloride (Bunsen, Roscoe 1913)
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Rubidium Chloride: Lepidolite Lithia Residue Parted with Platinic Chloride (Bunsen, Roscoe 1913)

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Calcium: Anhydrous Calcium Iodide Reduced with Sodium in a Screwed Iron Crucible (Moissan, Thorpe 1912)

Calcium: Anhydrous Calcium Iodide Reduced with Sodium in a Screwed Iron Crucible (Moissan, Thorpe 1912)

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