Abstract
The heat capacity of high-purity indium has been determined by adiabatic-shield calorimetry in the range 300 to 1000 K. Values of thermodynamic functions have been calculated andCp (1000 K), [H° (1000 K)−H° (298.15 K)], and [S° (1000 K)−S° (298.15 K)] are (27.11±0.15) J K−1 mole−1, (22873±70) J mole−1, and (41.567 ±0.125) J K−1 mole−1, respectively. The enthalpy of fusion is (3283±7) J mole−1 and the melting temperature (429.77±0.01) K. The premelting heat capacity is compatible with the presence of a mole fractionx ≈ 1·10−6 of a liquid-soluble/solidinsoluble impurity in the sample.
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