In the classic physical chemistry experiment, the partial molar volumes of each component in a binary solution are determined using a pycnometer. However, by assuming that the molar refractivity of these solutions behaves ideally (even for nonideal solutions), we have obtained estimates of the partial molar volumes based on measurements of the refractive indices of these solutions. We compare our estimates to literature values of the partial molar volumes.

Estimating the partial molar volume of each component in a binary solution using refractive index measurements

ACS Spring 2022

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