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Citation: Zhou Ya-Ping, Zhang Rui, Wan Hong-Wen, Zhan Zheng-Kun, Xu Ming-Fei. Thermochemical Studies on the LangbeiniteType Double Sulfate Salts，(NH₄)₂Cd₂(SO₄)₃ and K₂Cd₂(SO₄)₃[J]. Acta Physico-Chimica Sinica, ;2001, 17(03): 245-247. doi: 10.3866/PKU.WHXB20010312 shu

Thermochemical Studies on the LangbeiniteType Double Sulfate Salts，(NH₄)₂Cd₂(SO₄)₃ and K₂Cd₂(SO₄)₃

1.
Department of Chemistry,Central China Normal University,Wuhan　430079

Received Date: 6 July 2000
Available Online: 15 March 2001

The standard molar formation enthalpies of (A＋)2Cd2(SO4)3[A＋ is NH＋ 4 or K＋] are determined from the enthalpies of dissolution (ΔsHm) of [(A＋)2SO 4(s)＋2CdSO4(s)] and (A＋)2Cd2(SO4)3(s) in twice distilled water or 3 mol•L－1 HNO3 solvent respectively,at 298.2 K,as: ΔfHm [(NH4)2Cd2(SO4)3,s,298.2K]=－3031.74±0.08 kJ•mol－1 ΔfHm [K2Cd2(SO4)3,s,298.2K]=－3305.52±0.17 kJ•mol－1
- Double sulfate salts;Solution calorimetry;The standard molar enth alpy of formation
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Thermochemical Studies on the LangbeiniteType Double Sulfate Salts，(NH4)2Cd2(SO4)3 and K2Cd2(SO4)3

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通讯作者: 陈斌, bchen63@163.com

Thermochemical Studies on the LangbeiniteType Double Sulfate Salts，(NH₄)₂Cd₂(SO₄)₃ and K₂Cd₂(SO₄)₃