Chemical EquilibriummediumMCQ SINGLE⭐ Must-Do

If the standard free energy change () for a chemical equilibrium reaction is exactly zero, what is tChemical Equilibrium Chemistry Question

Question

If the standard free energy change ($\Delta G^\circ$) for a chemical equilibrium reaction is exactly zero, what is the numerical value of its equilibrium constant $K_p$?

Answer: B

💡 Solution & Explanation

The standard free energy change is related to the equilibrium constant by the isotherm equation $\Delta G^\circ = -RT \ln K_p$. If $\Delta G^\circ = 0$, then $-RT \ln K_p = 0$, which implies $\ln K_p = 0$. Therefore, $K_p = e^0 = 1$.

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