Abstract
The heat capacity and volumetric properties of cadmium iodide solutions in acetonitrile (AN) are measured at 298.15 K by calorimetric and densimetric means. Standard partial molar heat capacity $$\bar {C}_{{p,2}}^{^\circ }$$ and volume $$\bar {V}_{2}^{^\circ }$$ of CdI2 in AN are calculated. Standard heat capacity $$\bar {C}_{{p,i}}^{^\circ }$$ and volume $$\bar {V}_{i}^{^\circ }$$ of the cadmium ion in AN at 298.15 K are determined. The effect produced by the nature of such solvents as AN, DMF, DMSO, and MP on $$\bar {C}_{{p,i}}^{^\circ }$$ and $$\bar {V}_{2}^{^\circ }$$ of the cadmium ion is analyzed, and a substantial contribution from the electrostatic component is discovered.
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