van't Hoff equation
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van't Hoff equation[van′tȯf i‚kwā·zhən]
An equation for the variation with temperature T of the equilibrium constant K of a gaseous reaction in terms of the heat of reaction at constant pressure, Δ H: d (ln K)/ dT = Δ H/RT 2, where R is the gas constant. Also known as van't Hoff isochore.