Phosphate Buffer System
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H2PO4− ⇌ HPO42− + H+
개요
The dihydrogen phosphate/hydrogen phosphate buffer system operates near pH 7.2, making it ideal for biological applications. With pKa2 = 7.2, it buffers effectively between pH 6.2 and 8.2. This is the buffer system used in phosphate-buffered saline (PBS), the most common buffer in biology.
참여 물질
| 역할 | 물질 | 계수 | 상태 |
|---|---|---|---|
| 반응물 | Phosphoric Acid H₃PO₄ | 1 | (aq) |
일상 속 예시
Phosphate buffers help maintain the pH of many biological fluids and are used in nearly every molecular biology laboratory.
산업적 중요성
인산염 완충계는 세포 배양용 PBS, 임상 진단, 식품 가공, 그리고 거의 중성 pH가 필요한 의약품 제형에 사용됩니다.
성질
- 유형
- Acid-Base
- 가역 반응
- 예
- 에너지
- 흡열