Question:
Consider the following reaction: $A(g) + B(g) \rightleftharpoons C(g) + D(g)$. Which one of the following is zero for this reaction at 298 K?
Consider the following reaction: $A(g) + B(g) \rightleftharpoons C(g) + D(g)$. Which one of the following is zero for this reaction at 298 K?
Show Hint
Equilibrium = minimum Gibbs energy, so $\Delta G = 0$.
Updated On: Jun 10, 2026
- $\Delta_r H^\ominus$
- $\Delta_r S^\ominus$
- $\Delta_r G$
- $\Delta_r G^\ominus$
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The Correct Option is C
Solution and Explanation
Step 1: Concept
Equilibrium thermodynamics.
Step 2: Analysis
At equilibrium, the change in Gibbs free energy of the reaction is zero ($\Delta_r G = 0$). $\Delta_r G^\ominus$ is only zero if $K_c = 1$.
Step 3: Conclusion
$\Delta_r G$ is zero at equilibrium.
Final Answer: (C)
Equilibrium thermodynamics.
Step 2: Analysis
At equilibrium, the change in Gibbs free energy of the reaction is zero ($\Delta_r G = 0$). $\Delta_r G^\ominus$ is only zero if $K_c = 1$.
Step 3: Conclusion
$\Delta_r G$ is zero at equilibrium.
Final Answer: (C)
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