Slope anomaly in the vapour pressure curve of Hg
The investigation of normally-metallic fluids at reduced densities has created considerable experimental and theoretical interest. Hensel1 has presented evidence for transitions, related to electronic properties, in both the liquid and vapour phases of Hg, and predicted that these would affect the liquid–vapour transition. We present here evidence that the vapour pressure curve of Hg, p(T), has an unusual and probably unique form in that the In p against 1/T plot showed a sharp change of slope at temperature T = T′ = 1,361 K and saturated liquid density ρL = 10.7 g cm−3. The latter is about the density at which Hensel1 deduced that the electronic mean free path equalled the mean interatomic spacing, and which he took to be associated with the electronic-property related transition in the liquid phase.
On the Equation of State of Mercury Vapour
In this report, new characteristic equations and tables of mercury vapour are shown, based on the results of our experiment on the relation between temperature and pressure of saturated mercury vapour, and using the experimental values of enthalpy of saturated liquid mercury by T.B. Douglas and others. The equation of state of mercury vapour obtained here is as follows : υ=RT/P-1.793×10-2(100/T)+2.51×10-2(100/T)2+1.071×10-3 where, P is pressure kg/m2, T=273.15+t is absolute temperature °K, t is temperature °C, υ is specific volume m3/kg and R is gas constant of mercury vapour 4.226 2 kgm/kg°K.
Structure and electrical properties of liquid zinc
Abstract The temperature dependence of the structure factor for liquid zinc is reported and the results are discussed in terms of the pseudopotential theory of metals.