1 / 7

2、 金属离子的副反应系数  M

2、 金属离子的副反应系数  M.  M(L) =1+  1 [L] +  2 [L] 2 +…+  n [L] n. M + Y = MY. OH -. L. MOH. ML. ● ● ●. ● ● ●. M(OH) n. ML n.  M.  M(OH) =1 +  1 [OH - ]+  2 [OH - ] 2 + …+  n [OH - ] n. 多种络合剂共存.  M =  M(L1) +  M(L2) +…+  M(Ln) -( n -1).

cleave
Télécharger la présentation

2、 金属离子的副反应系数  M

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 2、 金属离子的副反应系数 M M(L) =1+1[L] +2[L]2+…+n[L]n M + Y = MY OH- L MOH ML ● ● ● ● ● ● M(OH)n MLn M M(OH) =1 +1[OH-]+ 2[OH-]2+ …+ n[OH-]n

  2. 多种络合剂共存 M = M(L1)+ M(L2) +…+M(Ln)-(n-1) M(L) =1+1[L] +2[L]2+…+n[L]n

  3. 3 、络合物的副反应系数 MY M + Y = MY H+ OH- MHY MOHY MY 酸性较强 MY(H)= 1+ KMHY×[H+] 碱性较强 MY(OH)= 1+ KM(OH)Y×[OH-]

  4. 计算：pH=3.0、5.0时的lg ZnY(H),KZnHY=103.0 pH=3.0, αZnY(H)=1+10-3.0+3.0=2 , lgαZnY(H)= 0.3 pH=5.0, αZnY(H)=1+10-5.0+3.0=1, lgαZnY(H)= 0

  5. 二、络合物的条件稳定常数 条件稳定常数：

  6. 例：计算pH = 11, [NH3] = 0.10 时的 lgK’ZnY 解 Zn(NH3)42+的lg 1~lg4分别为2.27, 4.61, 7.01, 9.06 查表12：p.396, 查表10：p.394,

More Related