The sublimation pressure of chromium trichloride was measured by the static method with a quartz membrane-gauge manometer in the temperature range of 875–1230 K. An approximating equation for the sublimation pressure vs. temperature was found. The enthalpy (259.4±4 kJ mol−1) and the entropy (224.2±3.5 J mol−1 K−1) of sublimation at 298 K were calculated. For the process 2 CrCl3(g) + Cl2(g) = 2 CrCl4(g), the following values were obtained: Δr H°298 = −207.1±11.6 kJ mol−1 and Δr S°298 = −173.6±10 5 J mol−1 K−1.
用石英膜压力计在875-1230 K的温度范围内采用静态法测量了
三氯化铬的升华压力。找到了升华压力与温度的近似方程。计算了298 K时升华的焓(259.4±4 kJ mol−1)和熵(224.2±3.5 J mol−1 K−1)。对于过程 2 CrCl3(g) + Cl2(g) = 2 CrCl4(g),获得以下值: Δr H°298 = -207.1±11.6 kJ mol−1 和 Δr S°298 = -173.6±10 5 J mol−1 K−1。