Abstract
The vapour pressure of ferrocene was measured in the temperature range 277 to 360 K. A static method (diaphragm manometer) and dynamic methods (torsion and mass-loss effusion) were used. The results are represented by the equation: {R/(·K −1·mol −1}1n(p/p°) =-(4817±26)(K/θ)+(74.29±0.14)x10 3(K/θ-K/T)-(71±){(θ/T)-1+1n(T/θ)} , where R is the gas constant, p o is a standard pressure of 1 Pa, and θ = 317.20 K (mean experimental temperature). The numerical values with their root-mean-square-error ranges represent the thermodynamic function changes on sublimation: Δ s g G m o, Δ s g H m o, and Δ s g C p, m o respectively at 317.20 K.
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