The Equilibrium State

Date Sing OF AG system Is an indicator of Spontaneity The Equilibrium State Represents a balance between the forward t reverse reaction. Neither direction represents a spon: allows reaction. when a system Is at equilibrium, As univ = 0 t AG syst = O Spontaneity as a Function OF Temp ( Revisited ) standard Gibbs Energy OF Reaction A56. X The gibbs energy change when all reactants and Products are Present in their Standard States ata temperature of interest (eseaul 25°C) of under an external Pressure of Ibar. Units; k)/ma OF reactic extensive Property) Standard State Activities "call of all reactants t Products is equal to 1. P gas. > Doar ( solute = IN All Solids L liquids must be Present in some amount is lequired Are - ATH - TATS useful equation AIG Predicts Spontanelty of a chemical reaction at Sandard candition only. Thermod Ynamic Properties AH + As'can be assumed to be independent OF temperature with little erora over short tem perature ranges AG is strongly depen dent on temperature. At IT, AH is domsnant (-TAS is small ) At IT,-TASTI dominant C-TA 5 is large CS Dipindai dengan CamScanner

No. Date Prediting Spontaneity at Standard conditions AH 0 case As -TAS Ac° Direction OF change GSP 1 - + (allT) Forward (allT) 2 (VT) - - t +(TT) Forward (VT) reveise (AT) (VL) 3 + + IT) Forward (iT) reverse (VT) 4 + + + (allT) reverse (allT) CS Dipindai dengan CamScanner