acid base

our blood become more acid when we got more CO2 in blood cause by hard exercise, CO2 react with water becaome H+ and HCO3- so adding H+ cause the blood more acid.

Bicarbonate buffering system:

It is one of the major buffering systems used to maintain the pH of mammalian blood.

It is used in the formation of acid in the lumen on the stomach.

It is used to neutralize the pH of the chyme leaving the stomach and entering the small intestine.

When carbon dioxide dissolves in water, it can do so as a gas dissolved in water or by reacting with water to produce carbonic acid. In the cells of your body, the rate of carbonic acid production is accelerated by the enzyme carbonic anhydrase, as indicated in the following figure.



Carbonic acid is known as a weak acid because it partially dissociates into the positive Hydrogen ions and negative bicarbonate ions.