The mole fraction of carbon dioxide (xco2) in water is 0.25. determine the molarity of co2. (assume the density of the solution is 1.0 g/ml.)

Let us assume that there is 1 mole of the solution present. The mass becomes:

Mass = fraction of carbon dioxide * Mr of carbon dioxide + fraction of water * Mr of water

Mass = 0.25*44 + 0.75*18

Mass = 24.5 grams

Now, we determine the volume of the solution using:

Volume = mass / density

Volume = 24.5/1 = 24.5 mL

The molarity of a solution is:

Molarity = moles / liter

Molarity = 0.25 / 0.0245

Molarity = 10.2 M