Probing the Determinability of Meaningful Rate Constant Values in Solvent–Ligand Exchange Reactions in Metal Carbonyl Complexes
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[1] University of Puerto Rico, United States
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- Localización: Journal of chemical education, ISSN 0021-9584, Vol. 99, Nº 2, 2022, págs. 1140-1145
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
This communication describes an activity where upper-level chemistry students explore the determinability of rate constant values without concentration dependences (ktrue) related to a solvent–ligand exchange in a transition metal carbonyl complex. By performing a series of multivariable linear regression (MVLR) analyses of experimentally determined rate constant values (kobsd), students, in general, were able to grasp the notion that none of the values of the ktrue involved in the described kinetics scenario can be determined individually or collectively with reasonable accuracy due to the existence of linear correlations between the independent variables (solvent concentrations). Moreover, in this inquiry-based activity, coins were used as manipulatives to show the proof of concept that MVLR can still provide reliable individual ktrue values when the correlation between the independent variables is removed.
