CaF2在0. OlOmol/L HF溶液中的溶解度是多少?已知CaF2的Ksp=2.7z 10-11, 1IF的 Ka二6. 6' 10-1 2根据下表所给数据,判断化学计量点前后的E值 滴定体系E (V) 计量点前0. 1%计量点时计量点后0. 1% Fe3+滴定 Sn2+ 0. 32 0. 50 血04-滴定 Fe2+ 0. 86 1.37 相关知识点: 试题来源: 解析...
The Ksp of calcium hydroxide, Ca(OH)2, is 5.02 x 10-6. Calculate the solubility of this compound in g/L. Calculate the Ksp for hydroxide if the solubility of Sr(OH)2 in pure water is 2.1 x 101 g/L. Calculate the solubility (in g/L) of calcium fluoride in water a...
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已知: ①25℃时弱电解质电离平衡常数:Ka(CH3COOH) =1.8×10-5,Ka(HSCN) =0.13;难溶电解质的溶度积常数:Ksp(CaF2) =1. 5×10-10。 ②25℃时,2.0×10-3 mol/L氢氟酸水溶液中,调节溶液pH(忽略体积变化),得到c(HF)、c(F-)与溶液pH的变化关系,如图1所示: 请根据以上信息回答下列问题:(1)25...