The temperature and enthalpy of the phase transition and fusion of EuCl 2 were determined and found to be 1014 K, 11.5 kJ mol -1 and 1125 K, 18.7 kJ mol -1 , respectively. Addition ally, the heat capacity of solid EuCl 2 was measured by Differential Scanning Calorimetry in the temperature range 306 -1085 K. The results were fitted to the linear equation C 0 p,m = (68.27 + 0.0255 T/K) J mol -1 K -1 in the temperature range 306 -900 K. Due to discrepancies in the liter ature on the temperature of fusion of EuCl 2 , the determination of the NaCl-EuCl 2 phase diagram was repeated. It consists of a simple eutectic equilibrium at T eut = 847 K with x(EuCl 2 ) = 0.49.
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Silva et al. (2001) studied this question.
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