14. In a normal bottle of Coca Cola before it is opened, the following equilibrium exists:
H2C03 <=> H+ +HCO3-; Ka = 4.2 x 1 O-7
Once the bottle is opened, this equilibrium no longer exists. Explain what happens, and write a new equilibrium expression showing what happens. I'll give you a hint; there is more than one equilibrium, and its what happens when a soft drink goes "flat".
Basically, the second equilibrium is:
H2O + CO2 (g) <------> H2CO3
Therefore, what we've really got going is this:
H2O + CO2 (g) <------> H2CO3 <------> H+ + ...
This solution is provided in 136 words. It discusses equilibrium and what happens when a can of pop is opened to effect equilibrium.