In:
The Journal of Chemical Physics, AIP Publishing, Vol. 65, No. 3 ( 1976-08-01), p. 1124-1129
Abstract:
Heat capacity measurements have been made on a 22.5 g sample of 242PuO2 from 12 to 350°K and on a 3.6 g sample of 244PuO2 from 4 to 25°K. The heat capacity curve has the normal sigmoid shape. At 298.15°K the heat capacity C°p, entropy S°, enthalpy H°−H°0, and tempered Gibbs energy (G°−H°0)/T are, respectively, (66.25±0.26) J °K−1⋅mole−1, (66.13±0.26)J °K−1⋅mole−1, (10 784±43) J mole−1, and −(29.96±0.12) J °K−1⋅mole−1. This value of the entropy is significantly lower than the one previously derived from heat capacity measurements on 239PuO2. At 298.15°K the standard entropy of formation and the standard Gibbs energy of formation are −(195.2±0.4) J °K−1⋅mole−1 and −(998.0±0.7) kJ mole−1, respectively.
Type of Medium:
Online Resource
ISSN:
0021-9606
,
1089-7690
Language:
English
Publisher:
AIP Publishing
Publication Date:
1976
detail.hit.zdb_id:
3113-6
detail.hit.zdb_id:
1473050-9
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