Thermodynamic study of Cs3Na(MoO4)(2): Determination of the standard enthalpy of formation and standard entropy at 298.15 K

摘要

The enthalpy of formation at 298.15 K and low temperature heat capacity of Cs3Na(MoO4)(2) have been measured for the first time in this work using solution calorimetry and thermal-relaxation calorimetry in the temperature range T = (1.9-299.6) K, respectively. The solution calorimetry measurements, performed in 2 M HNO3 solution, have yielded an enthalpy equal to Delta H-r(m)(298.15 K) = (6.79 +/- 1.72) kJ.mol(-1) for the reaction: