File:40. Реакција на калиум со сулфурна киселина.ogv
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Македонски: Многу мало парче метален калиум се става во епрувета со концентрирана сулфурна киселина. Епруветата е поставена во сад со вода заради безбедносни причини. Во моментот кога металот доаѓа во контакт со киселината започнува многу бурна реакција. Металот се топи, а ослободениот водород спонтано се пали заедно со стопениот метал. На крајот настанува слаба експлозија. Главната реакција која се одвива може да се запише со равенката:
2K(s) + H2SO4(l) = K2SO4(s) + H2(g) Осмислено и изведено од Марина Стојановска, Миха Буклески и Владимир Петрушевски, Институт за хемија, ПМФ, УКИМ, Скопје.English: A very small piece of potassium metal is added to a test tube filled with concentrated sulfuric acid. The test tube is placed in a jar with water for safety reasons. When the metal comes in contact with the acid, a very vigorous reaction occurs. The metal melts and the hydrogen gas is spontaneously ignited together with the molten metal. At the end a small explosion occurs. The main reaction that takes place can be described by the equation:
2K(s) + H2SO4(l) = K2SO4(s) + H2(g) Planned and performed by Marina Stojanovska, Miha Bukleski and Vladimir Petruševski, Department of Chemistry, FNSM, Ss. Cyril and Methodius University, Skopje, Macedonia. |
| Date | |
| Source | Own work |
| Author | Карас Студио |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 12:29, 22 February 2020 | 10 s, 1,920 × 1,080 (5.16 MB) | Инокентиј (talk | contribs) | User created page with UploadWizard |
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