Low-Temperature Heat Capacities and Enthalpy of Formation of Copper Oxysulfate

Details

• Personal Author:
  King, Edward G. ; Richardson, Dale W. ; Stuve, J. M.
• Description:
  Low-temperature heat capacities and the enthalpy of formation were determined calorimetrically by the Bureau of Mines for cuo.Cuso4. The derived standard entropy (s deg 298.15) Was 40.36+/-0.04 Cal/deg- mole, and the enthalpy of formation (ah deg f) was -219.1+/-0.3 Kcal/g-mole. A large thermal anomaly was observed in the heat capacity of cuo.Cuso4 at 20+/-0.1 K. Gibbs energy of formation data are tabulated up to 1,200 k. Construction details of a precision low-temperature adiabatic calorimeter capable of determining heat capacities of solids in the temperature range 5 to 320 k are given. A calibrated miniature germanium resistance thermometer was incorporated into the calorimeter to extend the range of accurate measurements below 15 k. High-resistance DC heater windings were used throughout the cryostat to reduce heat conduction of inner connecting wires. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Conference Publications ; Case Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  ALRC - Albany Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-18
• NIOSHTIC Number:
  nn:10007630
• NTIS Accession Number:
  PB-244778
• Citation:
  NTIS: PB 244 778 :18 pages
• Federal Fiscal Year:
  1975
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB 244 778
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:fcad0fabd03fd7c6960a67a515f72f317f5cc8d8504a2a60a176428362652236bafaa65b0a7240bba668d1d1bef42cf4960c5cb02911375a0596ee17056f5511
• Download URL:
  https://stacks.cdc.gov/view/cdc/237851/cdc_237851_DS1.pdf
• File Type:
  [PDF - 1.63 MB ]