THERMODYNAMIC PROPERTIES OF SULFURYL FLUORIDE FROM 12 K TO ITS BOILING POINT. THE ENTROPY FROM MOLECULAR AND SPECTROSCOPIC DATA

Technical Report · Mon Sep 28 04:00:00 EDT 1959

DOI:https://doi.org/10.2172/4221602· OSTI ID:4221602

Bockhoff, F J; Petrella, R V; Pace, E L

The heat capacity of sulfuryl fluoride was measured from 12 to 218 deg K A lambda transition was observed at 65.7 deg K The heat of fusion at the triple point temperature, 137.34 deg K, was 1073 cal/mole. The heat of vaporization at the normal boiling point 7.78 deg K, was 4594 cal/mole. The vapor pressure data are closely represented by the equation; log/sub 10/P/sub mm/ = 7.8323-1071.235/ T-0.01391 log/sub 10/T. The liquid density from 182 to 204 deg K is closely represented by the equation; d= 2.5760.004044 T. The entropy of sulfuryl fluoride gas was calculated from the calorimetric data and the third law of thermodynamics to be 62.63 E.U./mole at2l7.78 deg K. The calculated spectroscopic eutropy was 63.24 E.U./ mole. The discrepancy, 0.61 E.U./mole, is attributed to randormess in the solid at O deg K (auth)

• Research Organization: Western Reserve Univ., Cleveland. Morley Chemical Lab.
• NSA Number: NSA-14-000094
• OSTI ID: 4221602
• Report Number(s): NYO-4885
• Country of Publication: United States
• Language: English

Related Subjects

BOILING
CALORIMETERS
CHEMISTRY
DENSITY
EVAPORATION
FLUORIDES
FUSION HEAT
GASES
HEATING
LIQUIDS
MEASURED VALUES
OXYFLUORIDES
PRESSURE
SPECTROSCOPY
SULFUR COMPOUNDS
SULFUR FLUORIDES
TEMPERATURE
THERMODYNAMICS
VAPORS