[magician4]

Hi y'all

I've been trying for some time to calculate for the resulting temperature if I'd mix common water, 20°C , and common anhydrous CaCl₂ (which, sure enough, will raise temperature in the beginning, though the formal further wetting of CaCl₂*6 H₂O will have a cooling effect ), but there's so many variables involved with the different specific heat capacities of the system CaCl₂/ xH₂O on the one side, and the enthalpies of hydratation belonging to on the other hand, that I thought maybe someone out there has a table with respective mixtures and the temperatures resulting thereof listed, and might be willing to take a look (or maybe give me an advice for literature)

The idea was, to come out at approx 80°C , i.e. have a raise of ΔT=60 K


any help would be greatly appreciated


tnx in advance

Ingo

[magician4]

just for those who might dig out this thread at later times:

I did a small series of experiments, and my findings are that with approx. equal masses of CaCl₂ , water maximum temperature raise can be achieved: 20°C  87°C ; ΔT = 67 K

this mass ratio relates to the formation of CaCl₂ * 6 H₂O quite closely


regards

Ingo