Silver Bromide Photodecomposition
2AgBr → 2Ag + Br2
概要
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.
参加者
| 役割 | 物質 | 係数 | 状態 |
|---|---|---|---|
| 生成物 | Silver Ag | 2 | (s) |
日常の例
Color and black-and-white photographic film used AgBr crystals in gelatin emulsion to capture images for over a century.
産業上の重要性
AgBrは数十億ドル規模の写真フィルム産業の中核であった。コダックや富士フイルムはAgBr乳剤技術で世界的企業を築いた。
特性
- タイプ
- Photochemical
- 可逆的
- いいえ
- エネルギー
- 吸熱性
- ΔH
- 199.0 kJ/mol
関連する反応
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.