Heat capacities of gibbsite, Al(OH)3, between 13 and 480 K and magnesite, MgCO3, between 13 and 380 K and their standard entropies at 289.15 K, and the heat capacities of Calorimetry Conference benzoic acid between 12 and 316 K
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Abstract
The heat capacities of gibbsite and magnesite were measured between 13 and 380 K by means of an adiabatic calorimeter. The heat capacity of gibbsite was measured continuously between 340 and 480 K by means of a differential scanning calorimeter. Tables of the thermodynamic functions C°P, (H°T–H°O)/T,–(G°T–H°O)/T, and S°T–S°O are presented for these phases at integral temperatures. S°T–S°O are 68.44±0.14 J/(K•mol) and 65.09±0.13 J/(K•mol) at 298.15 K for gibbsite and magnesite, respectively. The heat capacities of Calorimetry Conference benzoic acid have been remeasured between 12 and 316 K.
Suggested Citation
Hemingway, B., Robie, R.A., Fisher, J.R., and Wilson, W.H., 1977, Heat capacities of gibbsite, Al(OH)3, between 13 and 480 K and magnesite, MgCO3, between 13 and 380 K and their standard entropies at 289.15 K, and the heat capacities of Calorimetry Conference benzoic acid between 12 and 316 K: Journal of Research of the U.S. Geological Survey, v. 5, no. 6, p. 797-806.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Heat capacities of gibbsite, Al(OH)3, between 13 and 480 K and magnesite, MgCO3, between 13 and 380 K and their standard entropies at 289.15 K, and the heat capacities of Calorimetry Conference benzoic acid between 12 and 316 K |
| Series title | Journal of Research of the U.S. Geological Survey |
| Volume | 5 |
| Issue | 6 |
| Year Published | 1977 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | 10 p. |
| First page | 797 |
| Last page | 806 |