The rate constants (at 45 ºC) for the anation of [Co(NH3)5H2…
The rate constants (at 45 ºC) for the anation of [Co(NH3)5H2O]3+ with three anions are shown below (Please write your answer on a paper and upload the image fine in the Assignments). (a) Are these data consistent with a dissociative or associative mechanism? Briefly explain your answer. (b) Write the rate equation that is consistent with your choice in (a). (c) Write an equation (reaction) for the rate-determining step of these reactions.
Read DetailsThe spinels have a general formula AIIB2IIIO4. The oxide an…
The spinels have a general formula AIIB2IIIO4. The oxide anions form a ccp (fcc) lattice and the cations occupy the tetrahedral or octahedral holes. For NiFe2O4, please answer to the following questions (Please write your answer on a paper and upload the image file in the Assignments) : (a) Determine the CFSEs of Ni2+ occupying the tetraheral and octahedral holes in terms of Δo. You must draw the electron configurations in the energy level diagrams (Note: The oxides are weak-field (high-spin) ligands and Δt ~ (1/2) Δo). (b) Determine the CFSEs of Fe3+ occupying the tetraheral and octahedral holes in terms of Δo. You must draw the electron configurations in the energy level diagrams (Note: The oxides are weak-field (high-spin) ligands and Δt ~ (1/2) Δo). (c) Which cation (Ni2+, Fe3+) prefers the octahedral holes more strongly? Briefly explain your answer. (d) Would you expect NiFe2O4 to form a normal or inverse spinel? Briefly explain your answer.
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