Problem 1
The formation of the complex ion \(\left[\mathrm{Cu}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) is described as a Lewis acid-base reaction. Explain. (a) What are the formulas of the Lewis acid and the Lewis base in this reaction? (b) What is the formula of the ligand? (c) What is the name of the species that provides the donor atom? (d) What atom is the donor atom, and why is it so designated? (e) What is the name of the species that is the acceptor?
Problem 3
Give two examples of a charged ligand and two examples of an uncharged ligand.
Problem 4
Why are substances that contain complex ions often called coordination compounds?
Problem 6
What must be true about the structure of a ligand classified as bidentate?
Problem 9
How many donor atoms does EDTA \(^{4-}\) have?
Problem 12
The cobalt(III) ion, \(\mathrm{Co}^{3+},\) forms a 1: 1 complex with \(\mathrm{EDTA}^{4-}\). What is the net charge, if any, on this complex, and what would be a suitable formula for it (using the symbol EDTA)?
Problem 14
What is the chelate effect? How does the dissociation of a ligand influence the chelate effect? What role does entropy have in the chelate effect?
Problem 16
How are the names of anionic ligands changed when they are part of the name of a coordination complex?
Problem 18
In a formula, what is the order of the metal and ligands?
Problem 20
How are the oxidation states of a metal indicated in coordination complexes?
