Calculate the concentration of carbon dioxide in a soft drink that was bottled under a partial pressure of 5.0 atm CO2 at 25°C (a) before the bottle is opened and (b) after the soda has gone "flat" at 25°C. The Henry's law constant for CO2 in water at this temperature is 3.1×10-2 mol/L∙atm. Assume that the partial pressure of CO2 in air is 0.0003 atm and that Henry's law constant for the soft drink is the same as that for water.

A. (a) 0.015 mol/L, (b) 0.002 mol/L
B. (a) 0.020 mol/L, (b) 0.003 mol/L
C. (a) 0.025 mol/L, (b) 0.004 mol/L
D. (a) 0.030 mol/L, (b) 0.005 mol/L