Silver Bromide Precipitation

AgNO3 + NaBr → AgBr↓ + NaNO3

Visão geral

Silver bromide precipitates as a pale yellow solid with Ksp = 5.4 × 10⁻¹³. It is much less soluble than AgCl. Silver bromide is photosensitive, decomposing in light to form metallic silver and bromine. This photosensitivity made AgBr the key compound in photographic film emulsions.

Participantes

Papel Substância Coeficiente Estado
Reagente Silver Nitrate AgNO₃ 1 (aq)
Produto Sodium Nitrate NaNO₃ 1 (aq)

Exemplo do cotidiano

All analog photographs ever taken relied on silver bromide crystals darkening when exposed to light in the camera.

Importância industrial

O brometo de prata foi a base da indústria fotográfica durante mais de 150 anos. Embora o digital tenha substituído a película, o AgBr ainda é utilizado em imagiologia médica e científica especializada.

Propriedades

Tipo
Precipitation
Reversível
Não
Energia
Exotérmico
ΔH
-85,0 kJ/mol

Reações relacionadas

Aluminum Hydroxide Precipitation Barium Carbonate Precipitation Barium Sulfate Precipitation Cadmium Sulfide Precipitation (Yellow) Calcium Fluoride Precipitation (Fluorite) Calcium Phosphate Precipitation (Bone Mineral) Chromium(III) Hydroxide Precipitation Lead Carbonate Precipitation Lead Chloride Precipitation Iron(III) Hydroxide Precipitation

Frequently Asked Questions

What is the equation for Silver Bromide Precipitation?
The balanced equation is: AgNO₃ + NaBr → AgBr↓ + NaNO₃.
What type of reaction is Silver Bromide Precipitation?
Silver Bromide Precipitation is a precipitation reaction.
Is Silver Bromide Precipitation exothermic or endothermic?
Silver Bromide Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -85.0 kJ/mol.