Heat capacity of binary mixtures

[CaptainPanic]

I specifically need the heat capacity of ethanol/water mixtures at various temperatures and pressures (all concentrations, from room temperature up to >200 deg C)...

 

I'd like to learn how to calculate this myself but "Excess properties" (like the Excess Gibbs energy and excess enthalpy that you find in the thermodynamics textbooks give me a headache).

 

In addition, I have a feeling that the beautiful thermodynamics theories are not of much use because the ethanol/water system is highly non-ideal (but I might be wrong here).

 

Does anyone simply have a source (books are also fine - just tell me the title + author/editor) where stuff like this is listed? I'd rather work with measured data than some horrible integration or other maths exercise

[Bignose]

I would think any of the handbooks on "physical property estimation" would be a good place to start. I have an old copy of The Properties of Gases & Liquids by Reid, Prausnitz and Poling that covers estimating things like this. Most of them are correlations or fits based on experimental data instead of purely theoretically driven.

[CaptainPanic]

I solved my own problem. I found it in a series of books called "Landolt-Börnstein", Volume 1, Densities of Liquid systems and their heat capacities (Springer-Verlag, Berlin, 1977).

 

I'm not sure how the copyright works with handbooks like this. Am I allowed to scan it, and put it online? (I mean, the handbooks have their info from other authors as well, right?). Because I don't know, I won't do it (yet). Anyone with further info about SFN rules can PM me (thanks in advance).

 

Anyway, I am sure that I can copy the references. The data seems to be from (very old) references:

 

Bose, Z. physik. Chem., 58, (1907) 585

Blacet, Leighton u. Barlett: J. physic. Chem., 35, (1931) 1935

 

For further information, the book refers to: Rivkin, S.L., Singarev, M.R.: Teplofix. vysokich Temperatur 2 Nr. 1 (1964) 39/47

... although the language with that last reference might be tricky.

 

There, now the references will be found by google as well

[alexpr07]

I found it in a series of books called "Landolt-Börnstein", Volume 1, Densities of Liquid systems and their heat capacities (Springer-Verlag, Berlin, 1977).

 

I was just about to recommend reading those books, they are one of the best out there and probably will be around for another 10-20 years as the development of this theory is barely discussed nowadays.