(b) [Zn(II)(H2O)6]?* can undergo successive reactions with phen ligands: [Zn(II)(H2O)«(phen)]²* + 2H2O [Zn(1I)(H2O)2(phen)2]?* + 2H2O log K2 = 6.09 [Zn(II)(phen)3]* + 2H2O [Zn(II)(H2O)6]?* + phen log Kn = 6.31 [Zn(1I)(H2O)«(phen)]?* + phen [Zn(II)(H2O)2(phen)2}²* + phen log Ks = 4.77 Explain the decrease in successive log Km values as the number of phen ligands increases and calculate log Ba for the overall reaction: [Zn(II)(H2O)6]?* + 3 phen - (Zn(II)(phen)s]²* + 6H2O (c) Explain why each of the complexes above are colourless and diamagnetic. Which would be more stable: [Ni(II)(phen)3]²* or [Zn(1I)(phen);]²* based on electronic configuration?

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(b) [Zn(II)(H20)6]²* can undergo successive reactions with phen ligands:
[Zn(I)(H2O)6]?* + phen
[Zn(II)(H2O)«(phen)]²* + phen
[Zn(II)(H2O)2(phen)2]²* + phen
[Zn(II)(H2O)«(phen)]²* + 2H2O
log KA = 6.31
[Zn(II)(H2O)2(phen)2]2* + 2H2O
[Zn(II)(phen)3]** + 2H2O
log K2 = 6.09
log Kz = 4.77
Explain the decrease in successive log Km values as the number of phen ligands increases
and calculate log ßa for the overall reaction:
[Zn(II)(H2O)c]²* + 3 phen
[Zn(II)(phen)3]?* + 6H2O
(c) Explain why each of the complexes above are colourless and diamagnetic. Which would be
more stable: [Ni(1I)(phen)3]²* or [Zn(1I)(phen)3]²* based on electronic configuration?
Transcribed Image Text:(b) [Zn(II)(H20)6]²* can undergo successive reactions with phen ligands: [Zn(I)(H2O)6]?* + phen [Zn(II)(H2O)«(phen)]²* + phen [Zn(II)(H2O)2(phen)2]²* + phen [Zn(II)(H2O)«(phen)]²* + 2H2O log KA = 6.31 [Zn(II)(H2O)2(phen)2]2* + 2H2O [Zn(II)(phen)3]** + 2H2O log K2 = 6.09 log Kz = 4.77 Explain the decrease in successive log Km values as the number of phen ligands increases and calculate log ßa for the overall reaction: [Zn(II)(H2O)c]²* + 3 phen [Zn(II)(phen)3]?* + 6H2O (c) Explain why each of the complexes above are colourless and diamagnetic. Which would be more stable: [Ni(1I)(phen)3]²* or [Zn(1I)(phen)3]²* based on electronic configuration?
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