Measurements were made of the vapor pressures of zirconium tetrafluoride by using a torsion effusion apparatus. The temperature dependence fit the equation: log(p/Pa) = (15.20 +/- 0.15) - (11 900 +/- 200)/(T/K) (from 685 to 828 K). The compound vaporizes congruently in the monomeric form. With treatment of the measured vapor pressures by second- and third-law methods, the standard sublimation enthalpy Delta H-sub degrees(298 K) = (239 2) kJ . mol(-1) was obtained.
Vapor Pressure of Zirconium Tetrafluoride / Bruno, Brunetti; Piacente, Vincenzo; Scardala, Paolo. - In: JOURNAL OF CHEMICAL AND ENGINEERING DATA. - ISSN 0021-9568. - 56:5(2011), pp. 1970-1973. [10.1021/je100972k]
Vapor Pressure of Zirconium Tetrafluoride
PIACENTE, Vincenzo;SCARDALA, Paolo
2011
Abstract
Measurements were made of the vapor pressures of zirconium tetrafluoride by using a torsion effusion apparatus. The temperature dependence fit the equation: log(p/Pa) = (15.20 +/- 0.15) - (11 900 +/- 200)/(T/K) (from 685 to 828 K). The compound vaporizes congruently in the monomeric form. With treatment of the measured vapor pressures by second- and third-law methods, the standard sublimation enthalpy Delta H-sub degrees(298 K) = (239 2) kJ . mol(-1) was obtained.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
