Calcium Oxalate Precipitation (Kidney Stones)
CaCl2 + Na2C2O4 → CaC2O4↓ + 2NaCl
概要
Calcium chloride reacts with sodium oxalate to form a white precipitate of calcium oxalate (Ksp = 2.3 × 10⁻⁹). Calcium oxalate is the primary component of approximately 80% of kidney stones. The monohydrate form (whewellite) is thermodynamically favored and forms the hardest, most painful stones.
参加者
| 役割 | 物質 | 係数 | 状態 |
|---|---|---|---|
| 反応物 | Oxalic Acid C₂H₂O₄ | 1 | (aq) |
| 生成物 | Sodium Chloride NaCl | 2 | (aq) |
日常の例
Most kidney stones are calcium oxalate crystals. Foods high in oxalate (spinach, rhubarb, almonds) can increase stone risk.
産業上の重要性
シュウ酸カルシウム沈殿の理解は、腎臓学、食品科学(シュウ酸含有量分析)、そしてビール醸造(ビアストーン防止)において重要です。
特性
- タイプ
- Precipitation
- 可逆的
- いいえ
- エネルギー
- 発熱性
- ΔH
- -12.0 kJ/mol
関連する反応
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 Calcium Oxalate Precipitation (Kidney Stones)?
The balanced equation is: CaCl₂ + Na₂C₂O₄ → CaC₂O₄↓ + 2NaCl.
What type of reaction is Calcium Oxalate Precipitation (Kidney Stones)?
Calcium Oxalate Precipitation (Kidney Stones) is a precipitation reaction.
Is Calcium Oxalate Precipitation (Kidney Stones) exothermic or endothermic?
Calcium Oxalate Precipitation (Kidney Stones) is exothermic (releases energy). The enthalpy change (ΔH) is -12.0 kJ/mol.