Which of the following thermodynamic relations accurately defines the reaction quotient () in terms of standard Gibbs free energy () and non-standard Gibbs free energy ()?

Question

Which of the following thermodynamic relations accurately defines the reaction quotient ($Q$) in terms of standard Gibbs free energy ($\Delta G^\circ$) and non-standard Gibbs free energy ($\Delta G$)?

Prashant Kotian · Accepted Answer

Correct answer: B. The fundamental thermodynamic equation relating non-standard free energy to the reaction quotient is . At equilibrium, and , which simplifies to . Option B is the universally correct equation for any stage of the reaction.

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