The Art of Electro Metallurgy Including All Known Processes of Electro Depositio
The Art of Electro Metallurgy Including All Known Processes of Electro Depositio
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In our eReader you can find the full English version of the book. Read The Art of Electro Metallurgy Including All Known Processes of Electro Depositio Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Art of Electro Metallurgy Including All Known Processes of Electro Depositio
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According to Dr. Bottger, the purity of silver may be ascertained as follows : Apply, by means of a glass rod, a drop of cold saturated solution of bichromate of potassium, in nitric acid of sp. Gr. 1*2, to a clean part of the surface, and immediately wash it off with cold water; if the silver is pure, a blood-red mark is left. All other metals behave differ- ently from this (' Chemical News, ' vol. Xxiii. P. 119). Runge had also previously employed a somewhat similar test. He immersed the arti...cle in a cold mixture of thirty-two parts of water, four of sulphuric acid, and three of chromate of potash. The. Immersed part quickly assumed a purple colour, which was less deep and less lively, in proportion to the amount of alloy contained in the silver. Silver may be purified, by dissolving it in warm dilute nitric acid, immersing clean sheets of copper in the liquid, until all the silver is precipitated, finally making the solution quite warm, to complete the precipitation, or until a little of it gives no white cloud on adding to it two or three drops of Preparation of Salts of Mercury.
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You can find similar books in the "Read Also" column, or choose other free books by George Gore to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
According to Dr. Bottger, the purity of silver may be ascertained as follows : Apply, by means of a glass rod, a drop of cold saturated solution of bichromate of potassium, in nitric acid of sp. Gr. 1*2, to a clean part of the surface, and immediately wash it off with cold water; if the silver is pure, a blood-red mark is left. All other metals behave differ- ently from this (' Chemical News, ' vol. Xxiii. P. 119). Runge had also previously employed a somewhat similar test. He immersed the arti...cle in a cold mixture of thirty-two parts of water, four of sulphuric acid, and three of chromate of potash. The. Immersed part quickly assumed a purple colour, which was less deep and less lively, in proportion to the amount of alloy contained in the silver. Silver may be purified, by dissolving it in warm dilute nitric acid, immersing clean sheets of copper in the liquid, until all the silver is precipitated, finally making the solution quite warm, to complete the precipitation, or until a little of it gives no white cloud on adding to it two or three drops of Preparation of Salts of Mercury.
What to read after The Art of Electro Metallurgy Including All Known Processes of Electro Depositio?
You can find similar books in the "Read Also" column, or choose other free books by George Gore to read onlineMoreLess
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