Hoffman voltameter for electrolysis
Bildnummer 11696761
| Electrolysis of water. The Hoffman voltameter,an apparatus used to demonstrate electrolysis of water. Three glass tubes are connected by a bridge near their bases. The middle tube is used to fill the apparatus with water and a small amount of electrolyte (e.g. dilute sulphuric acid). Each of the other tubes has a platinum electrode sealed into its base and is stoppered at the top. When a current is applied to the electrodes,hydrogen is liberated at the cathode (left) and oxygen at the anode in the volume ratio of 2:1. If both gases are diatomic (which they are),this shows that water contains twice as many hydrogen atoms as oxygen - H2O. This apparatus was designed by German chemist August von Hoffman in 1866 | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library |
| Bildgröße: | 3460 px × 5134 px |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: | - |
Preise für dieses Bild ab 15 €
Universitäten & Organisationen
(Informationsmaterial Digital, Informationsmaterial Print, Lehrmaterial Digital etc.)
ab 15 €
Redaktionell
(Bücher, Bücher: Sach- und Fachliteratur, Digitale Medien (redaktionell) etc.)
ab 30 €
Werbung
(Anzeigen, Aussenwerbung, Digitale Medien, Fernsehwerbung, Karten, Werbemittel, Zeitschriften etc.)
ab 55 €
Handelsprodukte
(bedruckte Textilie, Kalender, Postkarte, Grußkarte, Verpackung etc.)
ab 75 €
Pauschalpreise
Rechtepakete für die unbeschränkte Bildnutzung in Print oder Online
ab 495 €