Web直接计算 La2 (C2O4)3= 2La3+ + 3 C2O42- 1.1*10^-6 2.2*10^-6 3.3*10^-6 Ksp= [La3+]^2 * [C2O42-]^3 = (2.2*10^-6)^2 * (3.3*10^-6 )^3 =1.7*10^-28 显然与答案不符合 那就要考虑C2O42-水解 因为溶解度小,可以认为溶液是中性 H2C2O4 Ka1=5.9*10^-2 Ka2= 6.4*10^-5 C2O42-的分布系数 =Ka1*Ka2 / { [H+]^2 + [H+]*Ka1 +Ka1*Ka2} WebUse the solubility product for La (OH)3 (2 x 10-21) to find the concentration of OH' when La3+ first precipitates. What is the corresponding pH? Show transcribed image text Expert Answer 100% (1 rating) Transcribed image text: 12. pH and Solubility Product An acidic solution containing 0.010 M La3+ is treated with NaOH until La (OH)3 precipitates.
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WebSolubility Product Constants K. sp. at 25°C. The solid phases of aqion are listed here in two tables (together with the solubility product in form of pKsp = - log10 Ksp ): Only a subset … WebJun 19, 2024 · 原理:当 Qc < Ksp 时,难溶电解质的溶解平衡向右移动,沉淀就会溶解。 化学方法溶解沉淀的原理是:使沉淀溶解平衡向着溶解的方向移动。 常用的方法有: ① … location of croatia on map
溶度积计算公式 - 百度知道
WebOct 22, 2024 · 【概述】 氢氧化镧(La (OH)3)是白色固体,属于六方晶系,难溶于水,易吸收空气中的CO2,具有优异的光,电,磁性能,并且被人们作为催化剂,吸附剂,荧 … WebScandium (III) hydroxide is an inorganic compound with the chemical formula Sc (OH) 3, the trivalent hydroxide of scandium. It is an amphoteric compound. [2] It is slightly soluble in water, and its saturated solution (pH = 7.85) contains Sc … WebMay 4, 2015 · Consider the following three hydroxide salts: Zn(OH)2: Ksp = 4.5 x 10-¹7 La(OH)3: Ksp = 2.0 x 10-21 a. Write the dissolution reaction equation of Zn(OH)2. b. Write the dissolution reaction equation of La(OH)3. d. Calculate the molar solubility (M) of Zn(OH)2 in water. Give your answer with 3 sig figs. e. Calculate the molar solubility (M) of ... location of cruise ship iona