Abstract
The solid-state phase equilibria and thermodynamic properties of alloys in the As-S system have been studied using emf measurements. The temperature and composition dependences of the emf confirm the existence of As2S5, As2S3, AsS, and As4S3 with narrow homogeneity ranges. The emf data are used to calculate relative partial molar functions of the As in the alloys and the standard Gibbs energies and standard entropies of the arsenic sulfides.
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