In these areas there is a relatively small change in pH even though the per cent titration changes significantly. As is true with any quantitative concept, the only was to truly make the concept of pH and buffers your own is to work problems. Because of this, the concentration of H 2 CO 3 in blood is fixed by the concentration of CO 2 in the gas phase. The concentration of CO 2 in the gas phase is determined by the the concentration of CO 2 in the lungs. The CO 2 content in the lungs depends on the rate of CO 2 production in metabolism and the rate of breathing.
Partial pressure is the way the composition of gases is reported.
For this system, the Henderson-Hasselbalch equation then becomes , where 0.03 is a constant that defines the solubility of CO 2 in water. But more CO 2 dissolves in the solution. All rights reserved.