At Physiological PH of 7

question 19

Multiple Choice

At physiological pH of 7.4,which one of the following contributes most to the total serum CO₂ (think about the equilibrium of the reaction in the formula) ?

• A) Dissolved CO₂
• B) Carbaminohemoglobin
• C) HCO₃^-
• D) Carbonic acid

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