File:92. Вештачка крв.ogg
92._Вештачка_крв.ogg (file size: 18.54 MB, MIME type: application/ogg)
Summary
| Description |
English: Fake blood
The skin (on the hand) is soaked with concentrated potassium thiocyanate solution using cotton or paper towel. Then a dull knife, previously soaked in iron(III) chloride solution is used to make a fake cut. The knife leaves red trace on the skin that resembles fresh blood. The visual effect is due to a series of complex compounds that form between the Fe 3+ ions from the knife and the SCNˉ ions on the skin: Fe3+ + SCNˉ = FeSCN2+ FeSCN2+ + SCNˉ = Fe(SCN)2+ Fe(SCN)2+ + SCNˉ = Fe(SCN)3 Fe(SCN)3 + SCNˉ = Fe(SCN)4ˉ Performed by the Prof. PhD Miha Bukleski. The planning of the experiment also included the retired Prof. PhD Vladimir Petruševski and the students Mihail Trajkov and Darko Stojčev, Department of Chemistry, FNSM, Ss. Cyril and Methodius University, Skopje, Macedonia.Македонски: Вештачка крв
Со памук или хартија натопена во концентриран раствор од калиум тиоцијанат се премачкува кожата (на рака). Потоа, со нож со тапа острица, кој претходно бил потопен во раствор од железо(III) хлорид се поминува низ кожата премачкана со растворот од калиум тиоцијанат. Ножот остава црвена трага која личи на пресна крв од исеченица. Визуелниот ефект се должи на образување на низа сложени соединенија меѓу Fe3+ јоните присутни на ножот и SCNˉ јоните од кожата: Fe3+ + SCNˉ = FeSCN2+ FeSCN2+ + SCNˉ = Fe(SCN)2+ Fe(SCN)2+ + SCNˉ = Fe(SCN)3 Fe(SCN)3 + SCNˉ = Fe(SCN)4ˉ Изведено од Проф. д-р Миха Буклески. Во планирањето на опитот, исто така беа вклучени пензионираниот Проф. д-р Владимир Петрушевски, и студентите Михаил Трајков и Дарко Стојчев, Институт за хемија, ПМФ, УКИМ, Скопје, Македонија. |
| Date | |
| Source | Own work |
| Author | Дени Ингилизовски |
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This file was taken during Wikiexperiments 2023 set up by Shared Knowledge.
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 16:29, 23 February 2023 | (18.54 MB) | imagescommonswiki>Dandarmkd | Uploaded own work with UploadWizard |
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