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High-resolution heat capacity of SnCl2·2H2O single crystal
Authors:Takasuke Matsuo  Masami Tatsumi  Hiroshi Suga  Syûzô Seki
Institution:Department of Chemistry, Faculty of Science, Osaka University, Toyonaka, Osaka, Japan
Abstract:The heat capacity of SnCl2·2H2O single crystal was measured in the close vicinity of the phase transition temperature, Tc = 217.994 ± 0.01 K. Its anomalous part ΔC could be expressed as ΔC = A± ⊥ (T ? Tc)/Tc-α±, where α+ = 0.492 ± 0.02, α- = 0.492 ± 0.02, A+ = 1.148 JK?mol?, and A- = 1.155 JK?mol?. A quasi-isothermal absorption of the enthalpy amounting to 34 J mol? was observed at Tc.
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