Equilibrium constants qualitative interpretation

Qualitative Interpretation of the Reaction Quotient, Q and the Equilibrium Constant, K... 

Applications of NMR spectroscopy to structural, thermodynamic, and dynamic processes have been described. A brief discussion of the types of problems appropriate for study by this technique has been included. H and 13C NMR spectroscopy has been applied to define the ligand coordination in complexes. These experiments, combined with 170-labeling experiments, allowed deduction of the coordination number of the vanadium atom. Integration of NMR spectra allowed measurement of the formation constants and equilibrium constants. 2D 13C and 51V EXSY experiments were used in a qualitative and quantitative manner to examine intra- and intermolecular dynamic processes, of which several examples are discussed. The interpretation of the rate matrix and its relationship to the chemical processes under examination were also described. 2D EXSY spectroscopy has great potential as a tool with which to probe mechanisms in complex reactions however, such uses often requires estimation of errors. The major source of error in 2D 51V EXSY NMR studies on a two- and four-site vanadate system were found to be baseline distortion and the errors were estimated. Our results suggest... 

Physical 18 marks Molecular Hydrogen Chemical equilibrium constant calculations and its qualitative interpretation, equilibrium compositions and factors affecting these compositions, use of C, enthalpy and entropy data for equilibrium constant calculation at different temperatures... 

However, if we wish to use Equation (137) to calculate this equilibrium constant it is clear that the appropriate frequencies to use are not those of the isolated species, but rather those of the strongly hydrogen-bonded system which actually exists in aqueous solution. A quantitative treatment is thus very difficult, but some qualitative interpretations are possible. 

Qualitatively interpreting the equilibrium constant. By merely looking at the magnitude of K, you can teU whether a particular equilibrium favors products or reactants. 

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