I'm given the following values: pH = 7.48, PO2 = 120mmHg, and PCO2 = 18mmHg.(adsbygoogle = window.adsbygoogle || []).push({});

I have to find the [HCO3] using these values. There's one thing I don't understand about the Henderson-Hasselbalch equation and that is how to calculate the [CO2]. I found out that [CO2] = 0.03*PCO2. My question is, what is the 0.03 that is multiplied to the PCO2 to get the [CO2] value?

One last thing, the pKa in the HH equation, is it of the HCO2?

Thanks

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# HH Equation to calculate [HCO3-]

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