Question

The solubility of CO2 in water at 25°C and 1 atm is 0.034 mol/L. What is its solubility under atmospheric conditions? (The partial pressure of CO2 in air is 0.0003 atm.) Assume that CO2 obeys Henry’s law.

Which gas has the highest molar solubility in water at 25 degrees C and 1 atm

Answer 1

Henry's law states that the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid. So, if the partial pressure of CO2 in air is 0.0003 atm, then the solubility of CO2 in water at 25°C will be:

Solubility = k * P

Solubility = 0.034 mol/L * 0.0003 atm

Solubility = 1.02e-05 mol/L

Therefore, the solubility of CO2 in water at 25°C and atmospheric pressure is 1.02e-05 mol/L.