Flow-cell studies of thermal diffusion in liquids. Part 3.—The CCl4+cyclohexane system

Abstract

The laminar-flow technique,^{1, 2} has been applied to measure the Soret coefficient of mixtures of CCl₄ and cyclohexane. Measurements were made at 25°C over the full range of compositions, and at 35°C at one composition. The apparatus, though requiring a careful calibration, proved precise and easy to use. The results are in good agreement with those of Horne and Bearman,⁴ if their correction for the “forgotten effect” is considered to be inapplicable¹³ and is neglected.