The solubility coefficient of a gas may be defined as the number of cubic centimeters (STP) of the gas that dissolves in 1 cm3 of a solvent under a partial pressure of 1 atm. The solubility coefficient of CO2 in water at 20°C is 0.0901 cm3 CO2 (STP)/cm’ H2O (l).

(a). Calculate the Henry’s law constant in atm/mole fraction for CO2 in H2O at 20°C from the given solubility coefficient.

(b). How many grams of CO2 can be dissolved in a 12-oz bottle of soda at 20°C if the gas above the soda is pure CO2 at a gauge pressure of 2.5 atm (1 liter = 33.8 fluid ounces)? Assume the liquid properties are those of water.

(c). What volume would the dissolved CO2 occupy if it were released from solution at body temperature and pressure—37°C and I atm? Explain.