The following table reports the measurements of excess molar volume for the water– ethanol mixture at T = 298 K of Figure 8.4.

Data on excess molar properties are often correlated with a polynomial of the so-called Redlich–Kister form

Correlate the given data with a Redlich–Kister polynomial of third degree, and thus calculate the coefficients of the polynomial.

Transcribed Image Text:

Excess molar volume/% 0.0 -0.5 -1.0 -1.5 - 2.0 -2.5 - 3.0 -3.5 -4.0 + 0 o a b O O bo 10 0.2 O 0.4 0.6 Ethanol mole fraction 0.8