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Preferred Label : compensation effect;

IUPAC definition : In a considerable number of cases plots of TΔ‡S vs. Δ‡H, for a series of reactions, e.g. for a reaction in a range of different solvents, are straight lines of approximately unit slope. Therefore, the terms Δ‡H and TΔ‡S in the expression partially compensate, and \[Δ {\ddagger}G Δ {\ddagger}H - T\ Δ {\ddagger}S\] often is a much simpler function of solvent (or other) variation than Δ‡H or TΔ‡S separately.;

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In a considerable number of cases plots of TΔ‡S vs. Δ‡H, for a series of reactions, e.g. for a reaction in a range of different solvents, are straight lines of approximately unit slope. Therefore, the terms Δ‡H and TΔ‡S in the expression partially compensate, and \[Δ {\ddagger}G Δ {\ddagger}H - T\ Δ {\ddagger}S\] often is a much simpler function of solvent (or other) variation than Δ‡H or TΔ‡S separately.

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01/05/2025


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