Equilibrium Project

H2O + CO2 <-> H2CO3 <-> H+ + HCO3-

Reaction explination

When H2O and CO2 react together, they form H2CO3 (Carbonic Acid). The Carbonic acid will then either reform into H2O and CO2, or it will create H+ and HCO3-. Should it create H+ and HCO3-, the two products will then reform into H2CO3. This is a very slow reaction as it has a rate of 0.039 s^-1.

Effect on the human body

Whenever the body becomes too acidic from H+, it reacts with HCO3- and H2CO3 is produced. It will then enter equilibrium, creating and being created from H2O and CO2. However, the CO2 will be removed from the body due to the respiratory system. Eventually, all the H2CO3 will be used up at a reasonable pace, and the body's pH will return to normal.

Fun fact

This equilibrium equation exists in closed bottles of Soda, because the carbonated water creates H2CO3.
Carbon dioxide dissolves in water

Video Explination

When he increased the amount of carbon dioxide in the water, more carbonic acid was made. Some of this carbonic acid broke down into H+ and HCO3-, which lowered the pH of the solution. This is the opposite of what the body does when it removes CO2 from the organism.

Reaction shifts

Whenever the concentration of H2CO3 is increased, the reactants will also increase in order to balance out the larger product.
When pressure is added to the equation, the products will increase. This is due to the products having less moles than the reactants.
Finally, when the temperature is increased, there will be more reactants because the equation is exothermic.