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Standard Enthalpies of Formation of Rare Earth Stearate

X. Yang, Y. Zhang, S. Chen, and S. Gao

Department of Chemistry, Northwest University, 710069 Xi'an, China

 

Abstract: The constant volume combustion energies of four rare earth metal stearates (RE(St)3, RE = Ce, Pr, Nd, Sm), ∆cE, are determined by a precision rotating bomb calorimeter. The standard enthalpies of combustion, ∆cHm°, and the standard enthalpies of formation, ∆fHm°, are calculated for these salts. ∆f,RE(St)3(s)Hm°/(kJ mol-1) of the stearates are (-1274.32 +/- 22.40) (Ce), (-5312.81 +/- 17.37) (Pr), (-4811.30 +/- 19.12) (Nd), and (-4202.18 +/- 16.04) (Sm), respectively.

Full paper in Portable Document Format: 553a154.pdf

 

Chemical Papers 55 (3) 154–156 (2001)

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