Final answer:
The standard free energy of activation of reaction b can be determined by analyzing the activation energies of the reaction steps and identifying the catalyzed reaction.
Step-by-step explanation:
The standard free energy of activation of reaction b can be determined by analyzing the activation energies of the reaction steps and the effect of catalysis. Activation energy is the amount of energy required to bring all the molecules in one gram mole of a substrate to the transition state.
The catalyzed reaction is the one with a lower activation energy, which in this case is diagram (b). In summary, the standard free energy of activation of reaction b can be determined by analyzing the activation energies of the reaction steps and identifying the catalyzed reaction.