So these two molecules are now released. Now, as we release carbon dioxide, the carbon dioxide will begin to dissolve and eventually will leave the red blood cell and into the alveolis. Now, the hemoglobin also releases the H plus ions, which bind onto the hemoglobin in this area. What happens to the H plus ions is they essentially recombine with the bicarbonate ions that came from the blood plasma. Remember, these bicarbonate ions dissolve cells into the blood plasma. At the same time, we have the chloride ions going into the red blood cell.