Vapor Pressures of Tritium Oxide and Deuterium Oxide. Interpretation of the Isotope Effects
Vapor Pressures of Tritium Oxide and Deuterium Oxide. Interpretation of the Isotope Effects
复制标题
氧化氚和氧化氘的蒸气压。
DOI：
10.1063/1.1667903
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发表时间：
1968
影响因子：
4.4
通讯作者：
W. M. Jones
中科院分区：
文献类型：
--
作者：
W. M. Jones
测量了H2O和T2O( − 9°-114°C)和H2O和D2O(4°-114°C)的蒸气压差。纯液体的相对蒸汽压由ln (pH2O / pT2O) = ( − 103.87 ± 0.57) / T + (46 480 ± 210) / T2和ln(p H2O / pD2O) = ( − 70.87 ± 0.43 / T + (33630 ± 160) / T2表示。T2O和D2O的正常沸点分别为101.51°和101.42°C，给出了10°~110°C的蒸发热同位素差异，总结了三点温度和压力。蒸汽压转换温度为：D2O-T2O，116.2° ± 0.5°C；H2O-T2O，190 ± 10°C(估算)；H2O-D2O，220.7° ± 0.1°C(文献)。由拉曼光谱估算的H2O-D2O的1 / T系数和1 / T2系数与此数据的系数符合得很好。
Measurements are reported on the difference in vapor pressures of H2O and T2O ( − 9°‐114°C) and of H2O and D2O (4°‐114°C). The relative vapor pressures of the pure liquids are represented by ln (pH2O / pT2O) = ( − 103.87 ± 0.57) / T + (46 480 ± 210) / T2 and ln (pH2O / pD2O) = ( − 70.87 ± 0.43) / T + (33 630 ± 160) / T2. The normal boiling points of T2O and D2O are 101.51° and 101.42°C. Isotopic differences in heats of vaporization are given from 10° to 110°C. Triple‐point temperatures and pressures are summarized. Vapor‐pressure crossover temperatures are: D2O–T2O, 116.2° ± 0.5°C; H2O–T2O, 190 ± 10°C (estimated); H2O–D2O, 220.7° ± 0.1°C (literature).The data were also fitted to extensions of the above equations which included correction terms based on Bigeleisen's formulation of the vapor‐pressure isotope effect and a uniformist harmonic‐oscillator model of water. Estimates of the coefficients of 1 / T and 1 / T2 for H2O–D2O from Raman spectra are in reasonable agreement with coefficients from this data ...