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Precipitated Silver: Silver Chloride Reduced by Zinc in Acidulated Water (Thorpe 1913)

작성자

Charlie

28. 10월 2026

Precipitated Silver: Silver Chloride Reduced by Zinc in Acidulated Water (Thorpe 1913)

Fine silver powder without melting anything. Hydrochloric acid throws silver out of solution as white silver chloride. Zinc in slightly acid water then takes the chlorine away and leaves the silver as a grey powder. Source: Thorpe, Dictionary of Applied Chemistry, vol. 4 (1913), Silver. Thorpe gives no amounts, times or end-point. Ours: a silver nitrate solution, zinc sheet strips, hydrochloric acid of the two acids he names, and the washing and drying. Picture drawn by Youblob.

초급

1 day

안내

Dissolve silver nitrate in water

Ours: dissolve silver nitrate in distilled water as the silver solution. Silver nitrate stains and burns skin: gloves and goggles.

이 단계의 재료:

질산은1 as required

증류수1 as required

필요한 도구:

붕규산 비커

붕규산 유리 막대

니트릴 장갑

화학물질 비산 보안경

Throw down silver chloride with hydrochloric acid

Add hydrochloric acid to the solution. White silver chloride falls. Ours: add it while it still makes a precipitate, let it settle and pour off the liquid.

이 단계의 재료:

염산1 as required

필요한 도구:

붕규산 비커

붕규산 유리 막대

니트릴 장갑

화학물질 비산 보안경

Reduce the chloride with zinc in acid water

Cover the chloride with water made slightly acid with hydrochloric acid (Thorpe: hydrochloric or sulphuric) and put zinc in it. The zinc reduces the chloride to silver. Ours: strips of zinc sheet, left in until no white chloride is left. Time not given.

이 단계의 재료:

아연판1 as required

염산1 as required

증류수1 as required

필요한 도구:

붕규산 비커

붕규산 유리 막대

니트릴 장갑

화학물질 비산 보안경

Take out the zinc, wash and dry the silver

Ours: lift out what is left of the zinc, wash the grey silver powder with water until the washings are no longer acid, filter, and dry it. Keep it in a closed jar.

필요한 도구:

증류수