Silver Chloride Photodecomposition

2AgCl → 2Ag + Cl2

Descripción general

Silver chloride darkens upon exposure to light as photons provide enough energy to reduce Ag⁺ to metallic silver. This photosensitivity of silver halides is the fundamental chemistry behind traditional photography. The released chlorine atoms combine to form Cl₂ gas.

Participantes

Rol Sustancia Coeficiente Estado
Reactivo Silver Chloride AgCl 2 (s)
Producto Silver Ag 2 (s)

Ejemplo cotidiano

Traditional black-and-white photography relied on this reaction — light hitting AgCl-coated film created a latent image of metallic silver.

Importancia industrial

Base de los cristales fotocromáticos en lentes oftálmicas y de las emulsiones fotográficas de alta sensibilidad.

Propiedades

Tipo
Photochemical
Reversible
No
Energía
Endotérmico
ΔH
254,0 kJ/mol

Reacciones relacionadas

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

Frequently Asked Questions

What is the equation for Silver Chloride Photodecomposition?
The balanced equation is: 2AgCl → 2Ag + Cl₂.
What type of reaction is Silver Chloride Photodecomposition?
Silver Chloride Photodecomposition is a photochemical reaction.
Is Silver Chloride Photodecomposition exothermic or endothermic?
Silver Chloride Photodecomposition is endothermic (absorbs energy). The enthalpy change (ΔH) is 254.0 kJ/mol.