Silver Bromide Precipitation

AgNO3 + NaBr → AgBr↓ + NaNO3

Aperçu

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.

Participants

Rôle Substance Coefficient État
Réactif Silver Nitrate AgNO₃ 1 (aq)
Produit Sodium Nitrate NaNO₃ 1 (aq)

Exemple du quotidien

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

Importance industrielle

Silver bromide was the foundation of the photography industry for over 150 years. While digital has replaced film, AgBr is still used in specialty medical and scientific imaging.

Propriétés

Type
Precipitation
Réversible
Non
Énergie
Exothermique
ΔH
-85,0 kJ/mol

Réactions associées

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.