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Chemistry Homework Help => AP Chemistry => Topic started by: Chandrasekhar on April 17, 2026, 04:17:02 PM

Title: AP chemistry Unit 7 & 9 MCQ Question on Standard and non standard Gibbs free energy
Post by: Chandrasekhar on April 17, 2026, 04:17:02 PM
mam, in this question I understand that delta G is greater than zero but why is it not at standard?Screenshot 2026-04-17 131446.png
Title: Re: AP chemistry Unit 7 & 9 MCQ Question
Post by: uma on April 18, 2026, 10:08:54 AM
In this question, we are discussing ΔGand not ΔGbecause the gases are mixed under non-standard conditions. Therefore, we must compare Qp with Kp. Since Q p>K p, the reaction mixture has excess products compared with equilibrium, so the reaction shifts toward the reactants. Hence, the forward reaction is non-spontaneous at that instant, and ΔG>0.