Wpływ hydradacji na prędkość propagacji fali ultradźwiękowej w roztworach wodnych CuCl2, CoCl2 i NiCl2

• Autorzy: Gepert M. , Manikowski R. , Ernst S.
• Języki publikacji: EN

Abstrakty

EN

The speeds of sound in aqueous solutions of CuCl2, CoCl2, and NiCl2 and the concentration dependencies of those speeds show important differences. Since the speed of in a liquid depends mainly on the structure (degree of molecular order), those differences should be related to the effect of the hydration of the electrolytes under test on the structure of the solutions. The qualitative correlation found between the speeds of sound and the structures of the low spin six-coordinate aqua-complexes of Cu2+, Co2+ and Ni2+ (due to : their different electronic configurations) suggests that the structure of the hydration complexes of transition metals may have a significant effect on the bulk properties of those solutions. A further quantitative correlation was found between the speed of sound and the entropy of hydration, S HYD, and the structural entropy, S str, of Cu2+, Co2+ and Ni2+; the smallest value of the speed of sound in the CuCl2 solution corresponds with the smallest relative entropy increase accompanying the hydration of Cu2+.

• Wydawca: Silesian Division of Polish Acoustical Society
• Czasopismo: Molecular and Quantum Acoustics
• Rocznik: 1998
• Tom: Vol. 19
• Strony: 83--89
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Gepert M.

autor

Manikowski R.

autor

Ernst S.

• University of Silesia, Institute of Chemistry, Szkolna 9, 40 - 006 Katowice