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Silver Oxide: Silver Nitrate Precipitated with Solution of Potassa (USP 1870)
Charlie

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Charlie

28. Oktoba 2026DE
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Silver Oxide: Silver Nitrate Precipitated with Solution of Potassa (USP 1870)

Silver oxide is a heavy, dark brown powder, and heating it to about 250 °C leaves pure silver. Potash added to a silver nitrate solution throws it down, and washing leaves potassium nitrate behind in the water. Source: US Pharmacopoeia 1870, as quoted in the US Dispensatory (1907), Argenti Oxidum. Not given here: the strength of the solution of potassa; ours: potassium hydroxide in distilled water. Silver nitrate stains and burns skin: gloves and goggles. Picture drawn by Youblob.
Mwanzo
1 day

Maagizo

1

Dissolve 4 troy oz silver nitrate in half a pint of water

Dissolve 4 troy ounces of silver nitrate in half a pint of distilled water. Silver nitrate stains and burns skin: gloves and goggles.

Vifaa kwa hatua hii:

Nitrati ya FedhaNitrati ya Fedha4 troy oz
Maji yaliyosafishwa kwa mvukeMaji yaliyosafishwa kwa mvuke0.5 pint

Zana zinazohitajika:

Mizani ya mizani-mbiliMizani ya mizani-mbili
Bikari ya BorosilikatiBikari ya Borosilikati
Fimbo ya Kioo cha BorosilikatiFimbo ya Kioo cha Borosilikati
Glavu za NaitriliGlavu za Naitrili
Miwani ya kinga dhidi ya kemikaliMiwani ya kinga dhidi ya kemikali
2

Add solution of potassa while it still precipitates

Add solution of potassa, about a pint and a half or as much as needed, for as long as it still throws down a precipitate. Ours: potassium hydroxide dissolved in distilled water; the USP strength is not given here. Potash free of carbon dioxide keeps out silver carbonate.

Vifaa kwa hatua hii:

Hidroksidi ya potasiamuHidroksidi ya potasiamu1 as required
Maji yaliyosafishwa kwa mvukeMaji yaliyosafishwa kwa mvuke1.5 pint

Zana zinazohitajika:

Bikari ya BorosilikatiBikari ya Borosilikati
Fimbo ya Kioo cha BorosilikatiFimbo ya Kioo cha Borosilikati
Glavu za NaitriliGlavu za Naitrili
Miwani ya kinga dhidi ya kemikaliMiwani ya kinga dhidi ya kemikali
3

Wash, dry and store in the dark

Wash the precipitate again and again with water until the washings are almost tasteless. Dry it and keep it in a well-stoppered bottle away from light. Ours: filter paper, and a low oven, well below the 250 °C at which it breaks down to silver.

Zana zinazohitajika:

Karatasi ya KuchujaKaratasi ya Kuchuja
Maji yaliyosafishwa kwa mvukeMaji yaliyosafishwa kwa mvuke
Tanuri la kukaushiaTanuri la kukaushia
Vyungu vya Kioo Cheusi vyenye Mifuniko Isiyopitisha HewaVyungu vya Kioo Cheusi vyenye Mifuniko Isiyopitisha Hewa

Vifaa

3

Zana Zinazohitajika

9

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Silver Nitrate Crystals: Fine Silver in Nitric Acid, Ure 1839
Hatari

Silver Nitrate Crystals: Fine Silver in Nitric Acid, Ure 1839

na CharlieDE

Kemia

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Caustic Potash (Potassium Hydroxide) from Potash and Slaked Lime, Ure 1839

Caustic Potash (Potassium Hydroxide) from Potash and Slaked Lime, Ure 1839

na CharlieDE

Isiyo hai

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