Final answer:
To determine Keq for the reaction with ΔG° = 245 kJ/mol at 325 K, convert ΔG° to joules and use the equation ΔG° = -RT ln Keq, where R is 8.314 J/mol K.
Step-by-step explanation:
To calculate the equilibrium constant (Keq) for a reaction with a given standard free energy change (ΔG°) of 245 kJ/mol at a temperature of 325 K, you can use the relationship ΔG° = -RT ln Keq, where R is the gas constant (8.314 J/mol K) and T is the temperature in Kelvin.
First, convert the free energy change to joules: 245 kJ/mol × 1000 J/kJ = 245000 J/mol.
Next, solve the equation for Keq:
245000 J/mol = - (8.314 J/mol K)(325 K) ln Keq
Keq = exp(-245000 / (8.314 × 325))
By calculating this, you would get the value for Keq, which tells you the extent to which reactants or products are favored at equilibrium under the given conditions.