File:47. Огнени топчиња.ogg
Original file (Ogg multiplexed audio/video file, Theora/Vorbis, length 47 s, 1,920 × 1,080 pixels, 8.75 Mbps overall, file size: 48.82 MB)
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| Description |
English: Fire balls
As soon as the acid comes into contact with the KMnO4, small amounts of Mn2O7 are produced. Initially, the sulfuric acid acts as an acid, protonating the MnO4– ions to form HMnO4, which is extremely unstable and undergoes dehydration with sulfuric acid and Mn2O7 is formed. In fact, it is formed in situ on the end of the glass rod. When in contact, Mn2O7 oxidises the cotton wool causing it to ignite and burn rapidly. KMnO4 + H2SO4 → HMnO4 + KHSO4 2HMnO4 → Mn2O7 + H2O Planned and performed by Marina Stojanovska, Miha Bukleski and Vladimir Petruševski, Department of Chemistry, FNSM, Ss. Cyril and Methodius University, Skopje, Macedonia.Македонски: Огнени топчиња
- Штом киселината доаѓа во контакт со KMnO4, се образуваат мали количества Mn2O7. Првично, сулфурната киселина делува како киселина, протонирајќи ги MnO4– јоните за да се образува HMnO4, што е крајно нестабилно соединение и се подложува на дехидратација со сулфурна киселина, при што се формира Mn2O7. Всушност, тој е формиран in situ на крајот на стаклената прачка. Кога се во контакт, Mn2O7 ја оксидира памучната волна предизвикувајќи брзо да се запали и да изгори. KMnO4 + H2SO4 → HMnO4 + KHSO4 2HMnO4 → Mn2O7 + H2O Осмислено и изведено од Марина Стојановска, Миха Буклески и Владимир Петрушевски, Институт за хемија, ПМФ, УКИМ, Скопје. |
| Date | |
| Source | Own work |
| Author | Deni Ingilizovski |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:06, 3 September 2021 | 47 s, 1,920 × 1,080 (48.82 MB) | Dandarmkd (talk | contribs) | Uploaded own work with UploadWizard |
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