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+)2SO4(s)+ 2CdSO4(s)] and (A+ )2Cd2(SO4)3(s) in twic...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+)2SO4(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: Δ fHm[(NH4)2Cd2(SO4)3,s,298.2K]=- 3031.74± 0.08 kJ· mol-1 Δ fHm[K2Cd2(SO4)3,s,298.2K]=- 3305.52± 0.17 kJ·展开更多
文摘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+)2SO4(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: Δ fHm[(NH4)2Cd2(SO4)3,s,298.2K]=- 3031.74± 0.08 kJ· mol-1 Δ fHm[K2Cd2(SO4)3,s,298.2K]=- 3305.52± 0.17 kJ·