Silver Chloride Photodecomposition

Visão geral

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

Exemplo do cotidiano

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

Importância industrial

A fotografia com halogeneto de prata dominou a imagiologia durante 150 anos. O AgCl ainda é utilizado em lentes fotocromáticas que escurecem à luz solar.