Apparent molar isentropic compressions and expansions of solutions

摘要

Isentropic compressibilities of solutions k_S are readily calculated using the Newton-Laplace equation together with measured speeds of sound and densities. The result is an apparent molar isentropic compression for a given solute0j,φ(K_sj; def) and a limiting property, φ(K_sj; def)~∞. This review examines the definition and calculation of φ(K_sj; def) and φ(K_sj; def)~∞, commenting on the related isentropic expansions, φ(E_sj; def) and φ(E_sj; def)~∞. We describe the thermodynamics which underpins the use of isentropic properties in the study of solute-solvent and solute-solute interactions.