ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Volume properties of molten KF-KCl-KBF₄ system

M. Chrenková and V. Daněk

Institute of Inorganic Chemistry, Slovak Academy of Sciences, CS-842 36 Bratislava

Abstract: Using the Archimedean method the densities of melts in the KF-KCl-KBF₄ system were determined. The temperature dependences of the density of individual mixtures were described by linear functions ϼ = a - bT. On the basis of the measured densities the molar volumes and the excess molar volumes at the temperatures of 1000, 1100, and 1200 K were calculated. The dependence of the molar volume on composition was described using the regression equation V =  ∑ V_i^°x_i + ∑∑ х_ix_j{А_ij+B_ijx_i)+x₁x₂x₃C          i            i  j                                                                                                                                                                                                     i≠j                                                                                                                                                                                It was found that the molar volumes of the investigated melts are close to the additive values.

Full paper in Portable Document Format: 452a213.pdf

Chemical Papers 45 (2) 213–219 (1991)