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The standard molar enthalpies of formation of β-La2Si2O7and β-Ce2Si2O7

✍ Scribed by M. Bolech; F.J.J.G. Janssen; A.S. Booij; E.H.P. Cordfunke

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
174 KB
Volume
28
Category
Article
ISSN
0021-9614

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✦ Synopsis

The standard molar enthalpies of solution of cerium and lanthanum silicates (b-Ce2Si2O7 and b-La2Si2O7) in (6.20 mol•dm -3 HCl + 0.147 mol•dm -3 HF) (aq) were measured. From these values the standard molar enthalpies of formation have been deduced: DfH°m(Ce2Si2O7, cr, b, 298.15 K) = -(3807.6 2 4.5) kJ•mol -1 and DfH°m(La2Si2O7, cr, b, 298.15 K) = -(3815.7 2 4.5) kJ•mol -1 .

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