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Controlling the pH of Blood

The pH of human blood plasma has to be between 7.35 and 7.45. The pH is controlled in part by the carbonic acid-hydrogen carbonate buffer.H2CO3(aq) ⇌ H+(aq) + HCO3-(aq)Carbonic acid H2CO3 is a weak acid and the hydrogen carbonate ion HCO3- is its conjugate base

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Specification: AQA Chemistry (7405), A-level, 3.1.12.4 Weak acids and bases Ka for weak acids. Topic: Acids, Bases and Buffers.

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