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Vanadium Trioxide: the Pentoxide Reduced with Carbon at Red Heat (Thorpe, 1913)
Vanadium trioxide, a black powder, made by heating vanadium pentoxide with carbon to a red heat. It is the oxide Gin reduced with ferro-silicon to make ferro-vanadium.
Hot trioxide takes up oxygen quickly and turns back to the dioxide, so it is kept out of the air while hot.
Source: T. E. Thorpe, Dictionary of Applied Chemistry vol. V (1913), p. 610. Picture: the book's text.
Kati
Unknown
Maagizo
1
1
Mix pentoxide and carbon
Mix pentoxide and carbon
Grind vanadium pentoxide with carbon. Proportions are not given.
Vifaa kwa hatua hii:
Oksidi ya vanadiamu1 kipande
Kaboni1 kipandeZana zinazohitajika:
Kinu na mchi2
2
Reduce at red heat
Reduce at red heat
Heat the mixture in a crucible to a red heat; the pentoxide is reduced to the trioxide, a black powder.
Zana zinazohitajika:
Chombo cha Kuyeyushia
Tanuri ya muffle3
3
Cool out of air
Cool out of air
In air the trioxide oxidises slowly when cold and quickly when hot, forming the dioxide (Thorpe); so cool it with the crucible covered (our step).
Zana zinazohitajika:
Chombo cha KuyeyushiaZana Zinazohitajika
3- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Vifaa vya Michoro Iliyounganishwa
Mchoro huu unatengeneza
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.