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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.
Juu
1 day
Maagizo
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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.
Vifaa kwa hatua hii:
Kloridi ya sesiamu12 gZana zinazohitajika:
Kalisi
Mizani ya dijitali ya usahihi
Bomba la Y2
2
Pump out
Pump out
Connect the upright limb to a Sprengel (mercury) vacuum pump and exhaust the tube.
Zana zinazohitajika:
Pampu ya utupuBomba la 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.
Zana zinazohitajika:
Kichomeo cha Bunsen
Miwani ya usalama iliyofungwa4
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.
Zana zinazohitajika:
Bomba la YKichomeo cha BunsenVifaa
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Hatari
Caesium Chloride: Pollucite Boiled in Hydrochloric Acid, Caesium Taken Out with Antimony Chloride (Fleischmann, US 2,808,313)
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Isiyo hai
12
0
0
0
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0
Calcium: Anhydrous Calcium Iodide Reduced with Sodium in a Screwed Iron Crucible (Moissan, Thorpe 1912)
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Isiyo hai
5
0
0
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Rubidium: Rubidium Chloride Heated with Calcium in an Iron Boat in Vacuum (Hackspill, Thorpe 1912)
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Isiyo hai
1
0
0
0
0
0
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.