Full Paper
Thermochemical Study on the Chiral Sodium Zincophosphate Nanocrystalline
Abstract
Chiral sodium zincophosphate nanocrystalline has been prepared and characterized. The standard molar enthalpy of the following reaction 12Na3PO4·12H2O(s)+12ZnSO4·7H2O(s)=Na12(Zn12P12O48)·12H2O(s)+12Na2SO4(s)+216H2O(l) was determined by solution reaction calorimetric at 298.15 K, and calculated to be 33.666±0.195 kJ/mol. From the results and other auxiliary quantities, the standard enthalpy of formation for sodium zincophosphate nanocrystalline was derived to be Δ fH⊖m [Na12(Zn12P12O48)·12H2O(s), 298.15 K]=−24268.494±0.815 kJ/mol.
