Ubufatanye
UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Barium: Barium Oxide Heated with Aluminium at 1200 °C in Vacuum (Guntz, Thorpe 1912)
Charlie

Yaremwe na

Charlie

1. Ugushyingo 2026DE
5
0
0
0
0

Barium: Barium Oxide Heated with Aluminium at 1200 °C in Vacuum (Guntz, Thorpe 1912)

Aluminium pulls the oxygen from barium oxide at 1200 °C. In a vacuum the freed barium boils off and condenses as metal in the cool end of the tube. Result: silver-white barium, up to 98.8 % pure. It burns easily in air; Thorpe keeps barium in dry carbon dioxide. Source: Thorpe, Dictionary of Applied Chemistry vol. 1 (1912), p. 418, after Guntz. Not given: the tube, amounts and time. Picture drawn by Youblob.
Hejuru
1 day

Amabwiriza

1

Mix oxide with one-tenth aluminium

Weigh barium oxide and mix it with one-tenth of its weight of aluminium. Ours: aluminium powder.

Ibikoresho by'iyi ntambwe:

Okiside ya bariyumuOkiside ya bariyumu1 as required

Ibikoresho bikenewe:

Ifu ya AluminiyumuIfu ya Aluminiyumu
Iminzani ya Digitale NyayoIminzani ya Digitale Nyayo
Isekuru n'Umuhini by'IbuyeIsekuru n'Umuhini by'Ibuye
2

Heat to 1200 °C in vacuum

Heat the mixture to 1200 °C in an evacuated tube. Ours: a porcelain tube in a tube furnace on a vacuum pump. Barium vapour attacks glass; in his other method Guntz lines the tube with nickel foil.

Ibikoresho bikenewe:

Umuyoboro wa PorcelaineUmuyoboro wa Porcelaine
Itanura ry'umuyoboroItanura ry'umuyoboro
PirometeroPirometero
Pompe ikuramo umwukaPompe ikuramo umwuka
3

Collect the metal from the cool end

The barium condenses in the cooler part of the tube. Take it out and keep it in dry carbon dioxide; it oxidises fast in air.

Ibikoresho bikenewe:

Umuyoboro wa PorcelaineUmuyoboro wa Porcelaine

Ibikoresho

1

Ibikoresho bikenewe

7

Iki gishushanyo gikora

Thumbnail
Agateganyo

Bariyumu

Free

24
0

CC0 Umurenge rusange

Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.

Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.

Ibiganiro

(0)

Injira kugira ngo ujye mu biganiro

Gutegura ibitekerezo...