VELOCITY OF ULTRASOUND IN POTASSIUM-AMMONIA SOLUTIONS - CONCENTRATED SOLUTIONS

被引：11

作者：

BOWEN, DE

机构：

[1] Department of Physics, University of Texas at El Paso, El Paso

来源：

JOURNAL OF CHEMICAL PHYSICS | 1969年 / 51卷 / 03期

关键词：

D O I：

10.1063/1.1672111

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The velocity of 10-MHz sound waves in potassium-ammonia solutions has been determined using a new apparatus for 35 different metal concentrations between 1.5 and 15.5 MPM (mole percent metal) over the temperature range 200° to 240°K. The adiabatic compressibility of these solutions has been determined by combining this data with the available density data. The concentration dependence of the sound velocity changed abruptly at a concentration of 3.2 MPM. This change is quite similar to the one previously observed in the lithium-ammonia solutions although it occurs at a lower concentration. Comparison of the sound velocities in Li-NH3 solutions and K-NH 3 solutions shows that the sound velocity is solute independent for concentrations less than about 4 MPM and that the Mott transition is not solute independent but apparently depends on the radius of the solute ion.

引用

页码：1115 / &