Silver Bromide Precipitation

AgNO3 + NaBr → AgBr↓ + NaNO3

概要

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.

参加者

役割 物質 係数 状態
反応物 Silver Nitrate AgNO₃ 1 (aq)
生成物 Sodium Nitrate NaNO₃ 1 (aq)

日常の例

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

産業上の重要性

臭化銀は150年以上にわたり写真産業の基盤であった。デジタルがフィルムに取って代わったが、AgBrは特殊な医療・科学用イメージングに今も使用される。

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.