Molecular interpretation The minimum in the Gibbs energy, which corresponds to,G=0, stems from the Gibbs energy of mixing of two gases, namely, reactants and products G w/o mixing Recall mIX G nRT(xA In xa XB In xB) mIxing
Molecular interpretation The minimum in the Gibbs energy, which corresponds to rG = 0, stems from the Gibbs energy of mixing of two gases, namely, reactants and products. G w/o mixing mixing Recall: mixG = nRT (xA ln xA + xB ln xB )
The general Case of a reaction generalized extent of reaction: J=vJ A Illustration: n2(g+3H2(8)>2NH3(g =∑v△G O △G=△,G+RTnQ activities of products K=∏ly equilibrium activities of reactants
The General Case of a reaction generalized extent of reaction: J = vJ Illustration: N2 (g) + 3H2 (g) → 2NH3 (g) ln r J f J J r r G v G G G RT Q activities of products Q activities of reactants = = + = J v J J Q a = J v J J equilibrium K a =