Vaporization of Compounds and Alloys at High Temperatures. Part 26. Mass Spectrometric Study of the Vaporization of Lead Monoxide. The Dissociation Energy of PbO

Abstract

The composition of the vapor in equilibrium with lead oxide (yellow rhombic form) in the temperature interval 1000-1150K was determined mass spectrometrically. The predominant species are PbO, Pb2O2, Pb3O3 and Pb4O4. From the partial PbO pressure measured here and that based on a reinterpretation of the literature data, when taking the presence of the polymers into account, the dissociation energy of the molecule PbO= 88.4=1.4 kcal/mole. The standard enthalpy at 25C of the reactions, Pb2O2(g) 2 PbO(g), Pb3O3(g) 3PbO(g), pb4O4(g) 4 PbO(g), is 63.4=4, 126.4=6.0 and 202.0=10.0 kcal/mole respectively.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1964
Accession Number
AD0612780

Entities

People

  • G. Exsteen
  • J. Drowart
  • R. Colin

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Dissociation
  • Enthalpy
  • Heat Energy
  • Heat Of Sublimation
  • Lead Oxides
  • Literature
  • Materials
  • Materials Laboratories
  • Measurement
  • Molecules
  • Monoxides
  • Oxides
  • Partial Pressure
  • Pressure Measurement
  • Vaporization
  • Vapors

Fields of Study

  • Chemistry

Readers

  • Combustion science or combustion engineering.
  • Materials Science and Engineering.