Standard Gibbs energy change equilibrium constant

Quantity K is the chemical reaction equilibrium constant for reactionyj and AG° is the corresponding standard Gibbs energy change of reaction (eq. 237). Although called a constant, fC is a function of T, but only of T. 

Calculate the equilibrium constant and the standard Gibbs energy change at 25°C for reaction 3 from the equilibrium constants obtained above for reactions 1 and 2. Show that AG° for reaction 3 = AG° of reaction 1 - AG° of reaction 2. 

Calculate the standard Gibbs energy changes and equilibrium constants in terms of species for the following reactions at... 

Calculate the standard Gibbs energy changes and equilibrium constants in terms of species for the following reactions at 298.15 K and ionic strengths of 0, 0.10, and 0.25 M. Summarize the calculations in two tables. 

The standard Gibbs energy change, AG° (still often called standard free energy, but this term should be avoided), is related to the equilibrium constant by equation (6). 

Calculation of equilibrium conversions is based on the fundamental equations of chemical-reaction equilibrium, which in application require data for the standard Gibbs energy of reaction. The basic equations are developed in Secs. 15.1 through 15.4. These provide the relationship between the standard Gibbs energy change of reaction and the equilibrium constant. Evaluation of the equilibrium constant from thermodynamic data is considered in Sec. 15.5. Application of this information to the calculation of equilibrium conversions for single reactions is taken up in Sec. 15.7. In Sec. 15.8, the phase role is reconsidered finally, multireaction equilibrium is treated in Sec. I5.9.t... 

THE STANDARD GIBBS ENERGY CHANGE AND THE EQUILIBRIUM CONSTANT... 

The Standard Gibbs-Energy Change and the Equilibrium Constant... 

In the thermodynamic approach to the transition state model the equilibrium constant is related to the standard Gibbs energy change for process (7.4.2). Thus, one writes... 

Now let us consider some examples of the relationship between the standard Gibbs energy change, AG , and the equilibrium constant K, making the assumption that the behavior is ideal... 

This standard Gibbs-energy change corresponds to the equilibrium constant... 

According to thermodynamics (see equation (5.115)) the standard Gibbs-energy change, AG, for the formation of activated complexes from reactants is related to this equilibrium constant by... 

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