Final answer:
To find the standard free energy change (ΔG°′) in the reaction A → B with an equilibrium constant (K'eq) of 10³, use the formula ΔG°′ = -RT ln K'eq with R being the gas constant and T the temperature in Kelvin.
Step-by-step explanation:
In the context of the given chemical reaction A → B, if the equilibrium constant (K'eq) is 10³, we can calculate the standard free energy change (ΔG°′) using the formula: ΔG°′ = -RT ln K'eq. Here, R is the gas constant (8.314 J/mol·K) and T is the temperature in Kelvin. By substituting the given values and assuming a room temperature of 298.15 K, the calculation can be represented as ΔG°′ = - (8.314 J/mol·K) (298.15 K) ln(10³). It is important to convert the common logarithm (base 10) to the natural logarithm as the gas constant is expressed in J/(mol·K).