The experimental values of the partial molar volume of a salt in water are found to fit the expression vB = 5.117 + 19.121x1/2, where vB = VB/(cm3 mol−1) and x is the numerical value of the molality of B (x = b/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 the same temperature is 18.079 cm3 mol−1.

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
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Chapter13: The Chemistry Of Solutes And Solutions
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The experimental values of the partial molar volume of a salt in water are found to fit the expression vB = 5.117 + 19.121x1/2, where vB = VB/(cm3 mol−1) and x is the numerical value of the molality of B (x = b/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 the same temperature is 18.079 cm3 mol−1.

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