Measurement of Apparent Molar Volume

If the apparent molar volume is determined for a range of compositions, the partial molar volume may be calculated by differentiation. Suppose measurements of (j)v are fitted to the equation 

In fact, many partial molar properties other than V are also found to be linear functions of m over considerable ranges of concentration, so that graphical representation of partial molar quantities normally uses as the abscissa. However, for 

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To obtain partial molar volumes from measurements of apparent molar volumes, differentiate Equation (10.11),... 

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