RI 6495 Heats and Free Energies of Formation of Sulfide of Manganese, Iron, Zinc, and Cadmium
- Organization:
- The National Institute for Occupational Safety and Health (NIOSH)
- Pages:
- 16
- File Size:
- 350 KB
- Publication Date:
- Jan 1, 1964
Abstract
The heats of formation of four sulfides --MnS ( alabandite ) , FeS ( hexagonal
pyrrhotite ) , ZnS ( wurtzite ) , and CdS ( greenockite ) -- were determined by hydrochloric
acid solution calorimetry . The heats of formation from the metals and
rhombic sulfur at 298.15 ° K are , respectively , -51.01 ± 0.19 , -23.81 ± 0.24 ,
-45.86 ± 0.20 , and -35.70 ± 0.30 kcal /mole . The corresponding free energies
of formation were calculated from the heats of formation and the pertinent
entropy values .
Citation
APA: (1964) RI 6495 Heats and Free Energies of Formation of Sulfide of Manganese, Iron, Zinc, and Cadmium
MLA: RI 6495 Heats and Free Energies of Formation of Sulfide of Manganese, Iron, Zinc, and Cadmium. The National Institute for Occupational Safety and Health (NIOSH), 1964.