Henderson-Hasselbalch equation Compensatory - pH normal, but change Decompensatory : pH, HCO3, H2CO3 change HCO3 H H2CO31Henderson-Hasselbalch Equation • Compensatory ~: pH normal, but ? change • Decompensatory ~: pH, HCO3 - , H2CO3 change [HCO3 - ] [H2CO3 ] pH ∝