The experimental values of the partial molar volume of salt B at 298 K are found to fit the expression: v_B = 6.218 +5.146b - 7.147b^2 where v_B is in (cm3/mol) and x is the numerical value of the molality of salt B. Use the Gibbs-Duhem equation to derive an equation for the molar volume of water in the solution. The molar volume of pure water at 298K is 18.079 cm3/mol. The experimental values of the partial molar volume of salt B at 298 K are found to fit the expression: v_B = 6.218 +5.146b - 7.147b^2 where v_B is in (cm3/mol) and x is the numerical value of the molality of salt B. Use the Gibbs-Duhem equation to derive an equation for the molar volume of water in the solution. The molar volume of pure water at 298K is 18.079 cm3/mol