You have 100 grams of water at 25°C in a container that holds exactly 200 ml. What mass of methanol do you need to add to the system such that the container is filled without overflowing? See the solution of Example 9.5 for additional details.

 

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TABLE 9-5 Molar volume for the methanol (1) + water (2) system at 298.15 K and 1 bar. Molar Volume (cm³/mol) 18.070 19.130 20.045 21.054 22.065 23.022 23.936 24.939 26.010 27.016 28.502 29.326 30.464 31.760 32.958 34.048 35.199 36.540 37.583 38.843 40.732 0 0.0545 0.1016 0.1532 0.2042 0.2516 0.2960 0.3438 0.3937 0.4396 0.5057 0.5416 0.5904 0.6450 0.6946 0.7391 0.7855 0.8388 0.8797 0.9284 1 A. Arce, A. Blanco, A. Soto and I. Vidal.: Densities, Refractive Indices, and Excess Molar Volumes of the Based on data from Temary Systems Water+Methanol +1-Octanol and Water + Ethanol +1-Octanol and Their Binary Mixtures at 298,15 K. J.Chem.Eng.Data 38 (1993) 336-340.