Commercial club soda is produced by pressurizing water with 10 atmospheres of CO2. Find the value of KH for CO2 on the net or in the library, and calculate how much CO2 is in a 12 fl.oz. glass of club soda. When the CO2 reverts to the gas phase (as it eventually will in your digestive system), figure out how much volume it occupies at physiological conditions (37oC and 1 atm). Then contemplate burping.