File:Miniature apparatus for the determination of manganese in pyrolusite or of iodine in iodides (Alessandri 1895.43).png
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[edit]DescriptionMiniature apparatus for the determination of manganese in pyrolusite or of iodine in iodides (Alessandri 1895.43).png |
Italiano: Per determinare il contenuto di manganese in un campione di pirolusite, ne si inseriscono pochi centesimi di g in un palloncino D assieme a dell'acido cloridrico. Per riscaldamento su fornelletto L si producono vapori di cloro, raccolti da un tubo C, A e gorgogliati in una provetta B con soluzione nota di ioduro di potassio. Dopo pochi minuti l'emissione di cloro cessa, e la soluzione viene titolata per iodometria, con tiosolfato sodico e salda d'amido. La medesima operazione può essere svolta con uno ioduro e acido solforico per determinare lo iodio totale nel sale.
English: To determine the manganese content in a pyrolusite sample, a few centigrams are placed in a small round bottom flask D connected by a pipe C, A to a test tube B filled with a known solution of potassium iodide. After a few minutes the flow of chlorine stops, and the solution is titrated with sodium thiosulphate and starch. This procedure can be also used to measure the released iodine from an iodide sample. |
Date | |
Source | Alessandri, P. E. Analisi Volumetrica Applicata Ai Prodotti Commerciali e Industriali; Ulrico Hoepli: Milano, 1895. |
Author | valeg96 |
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. | |
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https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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current | 16:01, 31 August 2020 | 2,333 × 1,697 (28 KB) | Valeg96 (talk | contribs) | Uploaded a work by valeg96 from Alessandri, P. E. Analisi Volumetrica Applicata Ai Prodotti Commerciali e Industriali; Ulrico Hoepli: Milano, 1895. with UploadWizard |
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File change date and time | 19:46, 24 August 2020 |
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