Home Scientific Article QUELQUES PROPRIETES DES SOLUTIONS DE SACCHAROSE

QUELQUES PROPRIETES DES SOLUTIONS DE SACCHAROSE

F. Heitz;

The model proposed to visualize the properties of sucrose aqueous solutions is similar to a gaseous one, where the molecules in their Brownian movement are going in a continuous medium, owning the macroscopic properties of water.

If the concentration is below Bp = 0,76 g per g of solution, the hydratation n, that is the number of water moles linked through the hydrogen bond to a sucrose mole, has the value n = 6,

between 0 and 100°C. The sphere equivalent to such a solvated molecule has then a radius r = 5,045

Angstroms.

In addition to their mean kinetic energy of translation : K, the molecule have a mean potential energy U as well, once the concentration of the solution is increasing.

The result is an activity coefficient f with a value p = 1 4- U/K with the model and the equa

tion of state for gases, some properties of sucrose solutions are calculated.

The diffusion coefficient is :

 

Proceedings: CITS 1975
Page: 585–605

Language: ENG

pdf download: CITS1975-585-605.pdf