This inorganic lab experiment, focusing on the kinetics of ligand-substitution reactions of a square-planar Pt(II) complex, involves collecting UV-vis absorption data and analyzing the results to determine a rate law to support one of three proposed mechanisms.
Students will review kinetic rate laws, integrated rate equations, and preparing solution mixtures of known concentrations (from Introductory Chemistry); Students will analyze experimental kinetics data: fitting first-order and second-order rate laws and determining an experimental rate law; Students will evaluate how an experimentally-derived rate law can be used to support or reject proposed mechanisms.
UV-vis spectrophotometer (experiment provides directions for using common Agilent/HP instrument); 100-1000 microliter autopipetters;
See INSTRUCTOR NOTES for full list of reagents and equipment, some notes and sample results.
two 3-hour lab sessions