PH 7.0 to 7.4
A phosphate buffer is a solution that resists changes in pH when small amounts of acid or base are added. It’s primarily composed of sodium dihydrogen phosphate (NaH₂PO₄) and sodium hydrogen phosphate (Na₂HPO₄), which act as a conjugate acid-base pair. This system is vital for maintaining stable pH levels in biological systems.
Key points about phosphate buffers:
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