Title of article
Thermochemical studies on the langbeinite-type double-sulfate salts, (NH4)2M2(SO4)3
Author/Authors
Yaping Zhou، نويسنده , , Fang Xu، نويسنده , , Xiao-Man Mo، نويسنده , , Hong-wen Wan، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2001
Pages
4
From page
43
To page
46
Abstract
The molar enthalpies of dissolution of (NH4)2SO4:2MSO4 and the double salts (NH4)2M2(SO4)3 (where M=Mn2+ or Cd2+) in double-distilled water were determined by solution–reaction calorimetry measurements at 298.2 K. From the values obtained together with auxiliary data and by using appropriate thermochemical cycles, the standard molar enthalpies of formation of (NH4)2M2(SO4)3 were hence derived: ΔfHmθ[(NH4)2Cd2(SO4)3(s)]=−3031.74±0.08 kJ mol−1ΔfHmθ[(NH4)2Mn2(SO4)3(s)]=−3250.16±0.09 kJ mol−1
Keywords
Solution calorimetry , Double-sulfate salts , Standard molar enthalpy of formation
Journal title
Thermochimica Acta
Serial Year
2001
Journal title
Thermochimica Acta
Record number
1195259
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