Chapter 20: Problem 33
Define the terms (a) labile complex, (b) inert complex.
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Chapter 20: Problem 33
Define the terms (a) labile complex, (b) inert complex.
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The absorption maximum for the complex ion \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\) occurs at \(470 \mathrm{nm}\). (a) Predict the color of the complex and (b) calculate the crystal field splitting in kilojoules per mole.
Copper is also known to exist in +3 oxidation state, which is believed to be involved in some biological electron transfer reactions. (a) Would you expect this oxidation state of copper to be stable? Explain. (b) Name the compound \(\mathrm{K}_{3} \mathrm{CuF}_{6}\) and predict the geometry of the complex ion and its magnetic properties. (c) Most of the known Cu(III) compounds have square planar geometry. Are these compounds diamagnetic or paramagnetic?
The \(\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}\) ion, which has a square planar geometry, is diamagnetic, whereas the \(\left[\mathrm{NiCl}_{4}\right]^{2-}\) ion, which has a tetrahedral geometry, is paramagnetic. Show the crystal field splitting diagrams for those two complexes.
Oxalic acid, \(\mathrm{H}_{2} \mathrm{C}_{2} \mathrm{O}_{4}\), is sometimes used to clean rust stains from sinks and bathtubs. Explain the chemistry underlying this cleaning action.
A concentrated aqueous copper(II) chloride solution is bright green in color. When diluted with water, the solution becomes light blue. Explain.
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