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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.
Advanced
1 day
Instructions
1
1
Charge the iron boat
Charge the iron boat
Put rubidium chloride and metallic calcium in an iron boat. Ours: set the boat in a porcelain tube.
Materials for this step:
Rubidium Chloride1 as requiredTools needed:
Calcium
Iron Boat
Porcelain Tube2
2
Heat in vacuum
Heat in vacuum
Evacuate and heat. Ours: a vacuum pump and a tube furnace.
Tools needed:
Vacuum Pump
Tube Furnace3
3
Distil off the metal
Distil off the metal
Distil the rubidium off. Ours: let it condense in the cool end of the tube and keep it under kerosene.
Tools needed:
Porcelain Tube
KeroseneMaterials
1- 1 as requiredPlaceholder
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