申論題

||3. The volume of an aqueous solution of NaCl at 25℃ was measured at a series of molalities b, and it was found that the volume fitted the expression:

where V (cm³) is the volume of a solution formed from 1.000 kg of water and x = b / b^θ. Calculate the partial molar volume of the components in a solution of molality 0.100 mol. (20%)