Rockwood 201 tial molar entropy of sucrose in the solution. X being any thermodynamic extensive property of a homogeneous phase of fixed composition, it is proposed to consider X B (y, z) as a generalized partial molar property of substance B with respect to constant (y, z) whenever X B (y, z)(X/n B) y,z,n. The concept and properties of partial molar quantities are presented and discussed in a generalized fashion within a thermodynamic framework.
The results of this analysis show that the standard entropies and/or molar volumes (and in cases solubility products) of the following phases deserve closer scrutiny: meta-ettringite phases magnesium/aluminium layered double hydroxide solid solutions almost all iron-bearing monosulfate and hydrogarnet phases and several calcium silicate hydrate solid solution end-members. To this end, a simple but robust method is used in which the standard entropy of an inorganic solid is correlated to its formula unit volume via a linear equation. The purpose of this study is to assess the reliability of standard entropies compiled in those datasets. This is further compounded by the controversies surrounding the entropy values reported in established thermodynamic datasets for cements. Though a sucrose solution was used for purposes of illu-It is not straightforward to experimentally measure the standard molar entropy of cement hydrates or clinker minerals.
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A key equation relates the chemical potential and partial molar entropy of solute-j.
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