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18. A patient, with inadequate ventilation, has an arterial pCO2 of 58 mm HG and 30...

18. A patient, with inadequate ventilation, has an arterial pCO2 of 58 mm HG and 30 meqvts/ L of [HCO3-]. Calculate arterial pH and indicate the acid-base status. The constant relating (solubility coefficient); alpha for pCO2 is 0.03 m M/mm of Hg for Carbonic acid: pKa1= 6.10 and pKa2= 10.25.

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Solution: from Henderson-hasselbalch equatio pH pKa log CO2 (aq) is in equillibrium with H2CO3 (aq), the acid equillibrium is

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