| Range |
aqueous ribose 204±20: aqueous ribose 5-phosphate 69 J/mol/K
|
| Organism |
Generic |
| Reference |
Robert N. Goldberg and Yadu B. Tewari, Thermodynamic and Transport Properties of Carbohydrates and their Monophosphates: The Pentoses and Hexoses, J. Phys. Chem. Ref. Data 18, 809 (1989) link p.816 left column bottom paragraph |
| Comments |
"In constructing the thermochemical tables it was necessary
to make estimates of two entropies, specifically the partial
molar entropies of aqueous ribose and ribose 5-phosphate.
The estimated entropy of 204±20 J/mol/K for
aqueous ribose is based upon the partial molar entropy of
aqueous xylose. In this respect, note that the values of the
partial molar entropies of the aqueous hexoses are reasonably
close to each other. The estimated entropy of 69
J/mol/K for aqueous ribose 5-phosphate is based upon an experimental determination of the enthalpy change
(-5.69kJ/mol) and an estimated equilibrium constant
of 420 for the hydrolysis of ribose 5-phosphate [ref 36]. Since these
two estimates substantially extend the thermochemical
network, [researchers] believe that they are useful. Clearly, measurments which would eliminate the need for these estimates
are desirable." |
| Entered by |
Uri M |
| ID |
110585 |