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- W2079553375 abstract "The fusion curves of HgCl2 and HgI2 were measured to a pressure of 22 kbar. The melting temperature can be represented as a function of pressure by tP = t0 + b1P + b2P2, where tP is the melting temperature in degrees Centigrade at a pressure P in kilobars; b1 and b2 are constants. Values for t0 (deg), b1 (deg kbar−1), and b2 (deg kbar−2) are 276, 259; 19.8, 17.1, and − 0.26, − 0.41, respectively. The electrical conductivities (K) of molten HgCl2 and HgI2 were measured to 805 and 620°C, respectively, at a pressure of 5.4 kbar. The electrical conductivity of HgCl2(l) was also measured from 557 to 634°C at P = 20.5 kbar. At these elevated pressures K varies exponentially with 1 / T, i.e., K ≅ A exp − (Ek / RT). At 5.4 kbar, A = 2.13 and 0.36 (ν·cm)−1; Ek = 8.46 ± 0.14 and 2.53 ± 0.12 kcal/mole, respectively, for molten HgCl2 and HgI2. The behavior of HgCl2(l) and HgI2(l) at this elevated pressure is now typical for a strong electrolyte. This is in contrast to their behavior at ordinary pressures where HgCl2 shows a maximum in its K vs T curve and HgI2 has a negative temperature coefficient of K from the onset of melting. The conductivities of molten HgCl2 and HgI2 were also examined from 3 to 20 kbar at constant T. At 600°K, KP=20 kbar / KP=3 kbar for HgCl2 = 12.4; at 555°K this ratio for HgI2 is 1.66. Thus pressure increases the conductivity of these salts. This is attributed to a greater degree of ionic dissociation at elevated pressures." @default.
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- W2079553375 date "1971-07-01" @default.
- W2079553375 modified "2023-09-25" @default.
- W2079553375 title "Fusion Curve and Electrical Conductivity of Molten HgCl<sub>2</sub> and HgI<sub>2</sub> at Elevated Pressure" @default.
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- W2079553375 doi "https://doi.org/10.1063/1.1675496" @default.
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