And because these two ions have a charge, they will be soluble in our water, in our blood plasma. And so we see that inside our body, we actually store carbon dioxide in the form of this equation because these are essentially soluble in our water while carbon dioxide is not. So once again, exercising tissue has a high rate of metabolism and therefore produces a large number of carbon dioxide. Waste byproducts these carbon dioxide, because they are not soluble in our blood plasma, are ultimately moved into the red blood cells where we use carbonic anhydrates to transform the carbon dioxide into H plus ions and bicarbonate ions, which are soluble in our blood plasma. Now, recall from basic chemistry that what determines the PH of anything of our blood plasma, in this case, is the concentration of H plus ions of hydrogen ions inside our blood plasma. So the more carbon dioxide molecules we have inside the blood plasma, the more of these H plus ions we will have inside our blood plasma.