If the buffer pair is to function properly, there must be 20 times more H₂CO₃ than there is NaHCO₃.

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Quizplus · Accepted Answer

For a buffer to function properly, the concentrations of the acid and its conjugate base (or base and its conjugate acid) do not need to be in a 20:1 ratio. Effective buffering occurs when the ratio is close to 1:1, but it can still function within a range of ratios, typically from 10:1 to 1:10.

If the Buffer Pair Is to Function Properly, There Must