Silver Iodide Precipitation
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AgNO3 + KI → AgI↓ + KNO3
概要
Silver nitrate reacts with potassium iodide to form a yellow precipitate of silver iodide (Ksp = 8.5 × 10⁻¹⁷). AgI is extremely insoluble and does not dissolve in ammonia, unlike AgCl and AgBr. Its crystal structure is similar to ice, making it an excellent cloud seeding agent.
参加者
| 役割 | 物質 | 係数 | 状態 |
|---|---|---|---|
| 反応物 | Silver Nitrate AgNO₃ | 1 | (aq) |
| 生成物 | Potassium Nitrate KNO₃ | 1 | (aq) |
日常の例
Cloud seeding aircraft release silver iodide particles to induce rain, exploiting AgI's ice-like crystal structure that nucleates ice crystals.
産業上の重要性
ヨウ化銀は気象制御のための人工降雨、写真、消毒剤として使用される。
特性
- タイプ
- Precipitation
- 可逆的
- いいえ
- エネルギー
- 発熱性
- ΔH
- -110.0 kJ/mol
関連する反応
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 Iodide Precipitation?
The balanced equation is: AgNO₃ + KI → AgI↓ + KNO₃.
What type of reaction is Silver Iodide Precipitation?
Silver Iodide Precipitation is a precipitation reaction.
Is Silver Iodide Precipitation exothermic or endothermic?
Silver Iodide Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -110.0 kJ/mol.