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Ferric Oxide: Hydroxide Precipitated from Ferric Chloride with Ammonia, Then Heated
Charlie

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Charlie

21. Oktoba 2026DE
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Ferric Oxide: Hydroxide Precipitated from Ferric Chloride with Ammonia, Then Heated

Ferric oxide, Fe2O3, made by way of the hydroxide as Thorpe's Dictionary (1912) gives it. Ferric chloride solution with excess ammonia throws down a bulky, brown, slimy hydroxide, which shrinks a great deal as it dries. Heated, it slowly gives up its water at 320 °C; taken to dull redness it suddenly contracts and glows, and is then much less soluble in acids. The picture: our diagram.
Mwanzo
1 day

Maagizo

1

Precipitate with excess ammonia

Add excess ammonia to ferric chloride solution: the hydroxide comes down as a bulky, brown, slimy precipitate. No amounts are given. Ours: stir in a beaker in a fume hood.

Vifaa kwa hatua hii:

Myeyusho wa kloridi ya ferikiMyeyusho wa kloridi ya feriki1 as required

Zana zinazohitajika:

Myeyusho wa amonia - asilimia 25-28Myeyusho wa amonia - asilimia 25-28
Bikari ya kiooBikari ya kioo
KikorogoKikorogo
Kabati la kutoa mvuke (lenye bomba)Kabati la kutoa mvuke (lenye bomba)
Miwani ya kinga dhidi ya kemikaliMiwani ya kinga dhidi ya kemikali
Glavu za mpiraGlavu za mpira
2

Filter, wash and dry (ours)

Ours: filter off the precipitate, wash it with water and dry it; it shrinks a great deal as it dries.

Zana zinazohitajika:

Karatasi ya KuchujaKaratasi ya Kuchuja
Faneli ya Kioo Yenye BombaFaneli ya Kioo Yenye Bomba
Chupa ya kuoshea ya maabaraChupa ya kuoshea ya maabara
Maji yaliyosafishwa kwa mvukeMaji yaliyosafishwa kwa mvuke
Tanuri la kukaushiaTanuri la kukaushia
3

Heat to dull redness

Heat the dry hydroxide: it gives up its water slowly at 320 °C. Taken on to dull redness, the anhydrous oxide suddenly contracts and glows brightly. Ours: a porcelain crucible in a muffle furnace.

Zana zinazohitajika:

Kikaango cha kuyeyushia chenye mfuniko (kaure)Kikaango cha kuyeyushia chenye mfuniko (kaure)
Tanuri ya muffleTanuri ya muffle
Koleo la kaure ya kuyeyushiaKoleo la kaure ya kuyeyushia
Glavu Zinazostahimili JotoGlavu Zinazostahimili Joto

Vifaa

1

Zana Zinazohitajika

15

Mchoro huu unatengeneza

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Oksidi ya feri

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Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

Ferric Chloride Solution: Iron Dissolved in Hydrochloric Acid and Saturated with Chlorine
Hatari

Ferric Chloride Solution: Iron Dissolved in Hydrochloric Acid and Saturated with Chlorine

na CharlieDE

Isiyo hai

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Ammonia Water: Sal Ammoniac and Lime, Gas Caught in Cold Water
Hatari

Ammonia Water: Sal Ammoniac and Lime, Gas Caught in Cold Water

na CharlieDE

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