Silver Bromide Photodecomposition
2AgBr → 2Ag + Br2
Обзор
Silver bromide is more photosensitive than silver chloride and was the primary photosensitive material in photographic film. Blue and UV light excite electrons in the AgBr crystal lattice, reducing silver ions at crystal defects to form a latent image. Chemical development then amplifies these silver clusters.
Участники
| Роль | Вещество | Коэффициент | Состояние |
|---|---|---|---|
| Продукт | Silver Ag | 2 | (s) |
Пример из жизни
Color and black-and-white photographic film used AgBr crystals in gelatin emulsion to capture images for over a century.
Промышленное значение
AgBr was central to the multi-billion dollar photographic film industry. Kodak and Fuji built global businesses on AgBr emulsion technology.
Свойства
- Тип
- Photochemical
- Обратимая
- Нет
- Энергия
- Эндотермическая
- ΔH
- 199,0 kJ/mol
Связанные реакции
Cis-Trans Isomerization of Retinal
Silver Chloride Photodecomposition
Luminol Chemiluminescence
Firefly Bioluminescence (Luciferin Oxidation)
Photolysis of Water (Vacuum UV)
Photochemical Smog Formation (NO₂ Photolysis)
Photodegradation of Methylene Blue by TiO₂
Photodissociation of Chlorine Gas
Photosynthesis
Chlorophyll Fluorescence
Frequently Asked Questions
What is the equation for Silver Bromide Photodecomposition?
The balanced equation is: 2AgBr → 2Ag + Br₂.
What type of reaction is Silver Bromide Photodecomposition?
Silver Bromide Photodecomposition is a photochemical reaction.
Is Silver Bromide Photodecomposition exothermic or endothermic?
Silver Bromide Photodecomposition is endothermic (absorbs energy). The enthalpy change (ΔH) is 199.0 kJ/mol.