| Ni2+-H2O系配位平衡研究 |
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| 引用本文： | 杨春.Ni2+-H2O系配位平衡研究[J].贵州大学学报(自然科学版),2011,28(2):130-132. |
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| 作者姓名： | 杨春 |
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| 作者单位： | 贵阳中医学院,贵州贵阳,550002 |
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| 摘 要： | 根据络合平衡原理,计算并绘制了Ni2+-H2O系中游离镍(Ⅱ)离子及镍(Ⅱ)的各种羟合配离子浓度的对数(lgc)与溶液pH值关系图及Ni(OH)2条件溶度积的对数(lgKs)与溶液pH值关系图.lgc-pH图描述了Ni(OH)2(s)溶解平衡时,溶液中各种离子的平衡浓度与pH的关系,该图表明:当pH为10.42-11....
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| 关 键 词： | 配位平衡 羟合配离子 pH值 条件溶度积 |
Study on Complex Equilibrium of Ni2+-H2 O System |
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| YANG Chun.Study on Complex Equilibrium of Ni2+-H2 O System[J].Journal of Guizhou University(Natural Science),2011,28(2):130-132. |
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| Authors: | YANG Chun |
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| Institution: | YANG Chun(Guiyang College of Traditional Chinese Medicine,Guiyang 550002,China) |
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| Abstract: | According to complex balance principle,the relationship figure of the concentration logarithm of free nickel(Ⅱ) ion and nickel(Ⅱ)-hydroxyl ion with the solution PH value,and the relationship figure of the logarithm of Ni(OH) 2 conditions solubility product(lgKS)with the pH value among Ni-H2O system were calculated and drawn.The lgc-pH figure described the relationship between the balance concentration of various ions in solution and pH value when dissolving equilibrium.When the pH is 10.42-11.22,the solubility of Ni(OH)2 is minimum.The lgKS-pH figure shows: when pH value is in the range of 9 to10,the condition solubility product of Ni(OH)2(s) is minimum.The results provide a theoretical basis for neutral-hydrolysis means to remove nickel(Ⅱ) in wastewater and the process of hydrometallurgy removal of impurities Ni(Ⅱ). |
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| Keywords: | sedimentation equilibrium hydroxy complex ions distribution coefficient conditional solubility product |
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