[NTUstudent]

please help with question, i have no idea about it.


Explain the following:

The reduction potential of the [Fe(CN)₆]^3- [Fe(CN)6]4- couple is 0.36 V, whereas that for the [Fe(phen)3]3+ [Fe(phen)3]3+ couple is 1.14V.

[TheUnfocusedOne]

Well whats the difference between the two compounds and what effect will that have on the energies of the mixed electron orbitals?

This is pretty straight forward if you've been paying attention to how different ligand change in the arragnment of molecular orbitals in the complexes.

(Being vague on purpose, if you reeeeally don't understand then ask again, otherwise re-read whatever chapter covered molecular orbitals in your book and try to figure it out)

[NTUstudent]

So is that because of energy gap between D_o
energy difference in CN- complexes will be larger, because it's in the left of phen,
so we need more energy to oxidese it. Am i in right way?