CHEM 2620H Lecture 2: Lecture 2 complexation
19 Jan 2019
School
Department
Course
Professor
Document Summary
Four types of aqueous inorganic reactions: acid-base, solubility / dissolution, complexation, redox. Where do aqueous metals come from: weather of rocks and minerals, depends on the type of rock/mineral. In regions with carbonate bedrock, [ca^2+] is higher: chemical concentration of trace elements in water can be used as a means of locating ore deposits, natural levels (concentrations) of metals may be toxic, e. g. As in ground water in bangladesh and eastern india: elevated [f-] in east africa, human activities, burning fossil fuels and smelting ores, municipal sewage and industrial effluents, mining activities, landfills and underground toxic waste disposal. Type a: m-l stability is a function of z^2/r ratio, complex more stable if ligand has a smaller ionic radius, note: the atomic radius decrease across a period from left to right and increases down a given group. The atoms with the largest atomic radii are located in group 1 and the bottom of groups.
