What is the pH of carbon dioxide? What is the pH of carbon dioxide?
depends on what it becomes, but cannot be below 6.
Carbon dioxide does not have a pH, because it is a gas.
However, an aqueous solution of carbon dioxide has a pH, because the carbon dioxide reacts with the water to form carbonic acid.
There is a complex series of equilibria:
Thus, the pH of a pure
Here's a table of the pH at three important partial pressures:
Carbon dioxide exists as a gas at room temperature, I have never heard gases having some pH . This is the same reason why litmus test of dry HCl gas doesn't yield any result .
If you perform a combination reaction of