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Zinc Oxide (Pharmacy): Zinc Carbonate Precipitated with Hot Soda, Then Heated
Charlie

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Charlie

21. Oktoba 2026DE
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Zinc Oxide (Pharmacy): Zinc Carbonate Precipitated with Hot Soda, Then Heated

The zinc oxide of pharmacy, by the wet route Thorpe's Dictionary (1913) gives: very pure zinc sulphate is precipitated with a hot solution of sodium carbonate, and the dried zinc carbonate is heated to drive off the carbon dioxide. Pure zinc oxide dissolves completely in ammonia. The picture: our diagram.
Mwanzo
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Maagizo

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Precipitate with hot sodium carbonate

Precipitate a solution of very pure zinc sulphate with a hot solution of sodium carbonate. No amounts are given. Ours: dissolve each in water and stir the hot carbonate solution in.

Vifaa kwa hatua hii:

Salfati ya zinkiSalfati ya zinki1 as required

Zana zinazohitajika:

Kabonati ya Sodiamu (Majivu ya Soda)Kabonati ya Sodiamu (Majivu ya Soda)
Maji yaliyosafishwa kwa mvukeMaji yaliyosafishwa kwa mvuke
Bikari ya kiooBikari ya kioo
KikorogoKikorogo
Sahani ya Kupasha JotoSahani ya Kupasha Joto
Glavu za mpiraGlavu za mpira
2

Filter, wash and dry (ours)

Ours: filter off the carbonate, wash it with water and dry it.

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
Tanuri la kukaushiaTanuri la kukaushia
3

Heat to expel carbon dioxide

Heat the dried carbonate to drive off the carbon dioxide, leaving zinc oxide. No temperature is given. Ours: a 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

14

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