Silver Bromide Photodecomposition

2AgBr → 2Ag + Br2

개요

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.

참여 물질

역할 물질 계수 상태
생성물 Silver Ag 2 (s)

일상 속 예시

Color and black-and-white photographic film used AgBr crystals in gelatin emulsion to capture images for over a century.

산업적 중요성

AgBr은 수십억 달러 규모의 사진 필름 산업의 중심이었습니다. Kodak과 Fuji는 AgBr 에멀젼 기술로 글로벌 사업을 구축했습니다.

성질

유형
Photochemical
가역 반응
아니오
에너지
흡열
ΔH
199.0 kJ/mol

관련 반응

Photochemical Smog Formation (NO₂ Photolysis) Photochromism of Spiropyran Chlorophyll Fluorescence Photodegradation of Methylene Blue by TiO₂ Photodissociation of Chlorine Gas Cis-Trans Isomerization of Retinal Photosynthesis Ozone Formation by UV Light Silver Chloride Photodecomposition Dye-Sensitized Solar Cell (Grätzel Cell)

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.