The reaction scheme that you propose must allow you to identify your five chosen metal complexes, indicating colours observed and the absence or presence of a precipitate when certain reagents are added. As part of your presentation you must explain the underlying chemistry of your scheme and the reactions involved (ie What is ligand substitution and how does it happen? Why and how do colour changes take place? Why and how does a precipitate form? Why does it sometimes re-dissolve?). Include balanced equations for all reactions.
• how is a reaction scheme done?
reaction mechanism is the sequence of elementary steps by which a chemical reaction occurs. A reaction that occurs in two or more elementary steps is called a multistep or complex reaction. A reaction intermediate is a chemical species that is formed in one elementary step and consumed in a subsequent step.