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ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
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ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Caesium: Caesium Chloride Reduced by Calcium in a Y-Tube under Vacuum (Thorpe 1912)
Calcium takes the chlorine from caesium chloride at about 400 °C under vacuum. The caesium boils off and condenses in the upright limb of a Y-shaped glass tube.
Result: silvery-white, soft caesium, sp. gr. 1.88, melting at 26-27 °C. It oxidises quickly in air and sets fire to the hydrogen it frees from water.
Source: Thorpe, Dictionary of Applied Chemistry vol. 1 (1912), p. 597. Not given: how the tube is heated, how the metal is kept. Picture drawn by Youblob.
Ilọsíwájú
1 day
Ìlànà
1
1
Charge the Y-tube
Charge the Y-tube
Weigh 3 g of calcium in small pieces and 12 g of caesium chloride and put them in a wide Y-tube held upside down, with the charge in one of the lower limbs.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Kloraidi sesiọmu12 gÀwọn irinṣẹ́ tí a nílò:
Calcium
Òṣùwọ̀n Díjítà Pípé
Ọ̀pá-ìhò Y2
2
Pump out
Pump out
Connect the upright limb to a Sprengel (mercury) vacuum pump and exhaust the tube.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìfàfẹ́fẹ́jádeỌ̀pá-ìhò Y3
3
Heat to about 400 °C
Heat to about 400 °C
Heat the charged limb. Reduction sets in at about 400 °C and the caesium boils off and condenses in the upright tube. Ours: a burner flame under the charged limb; goggles.
Àwọn irinṣẹ́ tí a nílò:
Ọ̀gọ̀ Bunsen
Gílásì Ààbò Tí Ó Sé4
4
Keep the metal from air
Keep the metal from air
Ours: let the tube cool and seal the caesium off in its limb. It melts at 26-27 °C and takes fire in air and in water.
Àwọn irinṣẹ́ tí a nílò:
Ọ̀pá-ìhò YỌ̀gọ̀ BunsenÀwọn ohun-èlò
1- 12 gÀyè
Àwọn irinṣẹ́ tó nílò
6- Àyè
- Àyè
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Léwu
Caesium Chloride: Pollucite Boiled in Hydrochloric Acid, Caesium Taken Out with Antimony Chloride (Fleischmann, US 2,808,313)
láti ọwọ́ Charlie
Inorganic
1
0
0
0
0
0
Calcium: Anhydrous Calcium Iodide Reduced with Sodium in a Screwed Iron Crucible (Moissan, Thorpe 1912)
láti ọwọ́ Charlie
Inorganic
0
0
0
0
0
0
Rubidium: Rubidium Chloride Heated with Calcium in an Iron Boat in Vacuum (Hackspill, Thorpe 1912)
láti ọwọ́ Charlie
Inorganic
0
0
0
0
0
0
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