Carbon dioxide gas has a Henry's law constant of 4.48×10-5 M/mmHg at 25.0 °C when dissolving in water. If the total pressure of gas (CO2 gas plus water vapor) over water is 1.00 atm, what is the concentration of CO2 in the water in grams per milliliter?

Question

Pressure of the water vapor at 25.0 °C = 23.8 mmHg

Answer 1

C = KpP
C = 4.48E-5*(760mm-23.8mm) = ? mols/L.
Then ? x 44 = grams/L. Convert to g/mL.