alb10688921
Elephant Toothpaste, 5 of 5
| Partager |
|---|
 Pinterest |
 Twitter |
 Facebook |
 Copier le lien |
 Email |
|
Ajouter à une autre Lightbox |
|
Ajouter à une autre Lightbox |
Avez-vous déjà un compte? S'identifier
Vous n'avez pas de compte ? S'inscrire
Acheter cette image.
Sélectionnez l'usage:
Titre: Elephant Toothpaste, 5 of 5
Légende: Voir la traduction automatique
Elephant toothpaste, 5 of 5. Elephant toothpaste is a colourful classroom demonstration of catalytic decomposition of hydrogen peroxide. Here a 3% hydrogen peroxide solution (H2O2) is mixed with liquid dish soap and some food colouring in an Erlenmeyer flask. Then powdered potassium iodide (KI) is added as a catalyst. Decomposition of hydrogen peroxide generates oxygen (O2) gas creating bubbles in the soapy solution. The foam rises up and then pours out of the flask. Chemically decomposition of hydrogen peroxide occurs in two steps: H2O2 (aq) + I- (aq) -> H2O(l) + OI-(aq) and H2O2(aq) + OI-(aq) -> H2O(l) + O2(g) + I-(aq).
Elephant toothpaste, 5 of 5. Elephant toothpaste is a colourful classroom demonstration of catalytic decomposition of hydrogen peroxide. Here a 3% hydrogen peroxide solution (H2O2) is mixed with liquid dish soap and some food colouring in an Erlenmeyer flask. Then powdered potassium iodide (KI) is added as a catalyst. Decomposition of hydrogen peroxide generates oxygen (O2) gas creating bubbles in the soapy solution. The foam rises up and then pours out of the flask. Chemically decomposition of hydrogen peroxide occurs in two steps: H2O2 (aq) + I- (aq) -> H2O(l) + OI-(aq) and H2O2(aq) + OI-(aq) -> H2O(l) + O2(g) + I-(aq).
Crédit: Album / Science Source / GIPhotoStock
Autorisations: ? Autorisation de modèle: Non - ? Autorisation de propriété: Non
Questions sur les droits?
Questions sur les droits?
Taille de l'image: 3417 × 5141 px | 50.3 MB
Taille d'impression: 28.9 × 43.5 cm | 1345.3 × 2024.0 in (300 dpi)
Mots clés: ANIMAL: ELEPHANT • CHIMIE • DECOMPOSITION • DEMONSTRATION • DENTIFRICE • ELEPHANT • EXPERIENCE • EXPERIENCES • EXPERIMENTATION • GAZ • HYDROGENE • PREPARATION D'EXPERIENCE • SCIENCE: CHIMIE • SCIENCE: EXPERIENCES
