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 Sulfate Precipitation
Cadmium Sulfide Precipitation (Yellow)
Calcium Phosphate Precipitation (Bone Mineral)
Chromium(III) Hydroxide Precipitation
Lead Carbonate Precipitation
Magnesium Hydroxide Precipitation
Copper Sulfide Precipitation
Cobalt(II) Hydroxide 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.