Consider the following gas-phase reaction of A 2 (shaded spheres)and B 2 (unshaded spheres):
A 2 (g)+ B 2 (g)⇌ 2 AB(g)ΔG ° = +25 kJ
-Which of the above reaction mixtures has the least spontaneous forward reaction?

Question

Consider the following gas-phase reaction of A 2 (shaded spheres)and B 2 (unshaded spheres):
A 2 (g)+ B 2 (g)⇌ 2 AB(g)ΔG ° = +25 kJ 
-Which of the above reaction mixtures has the least spontaneous forward reaction?

Quizplus · Accepted Answer

The spontaneity of a reaction is determined by the Gibbs free energy change (ΔG). A reaction with a positive ΔG is non-spontaneous. Without specific details on the reaction mixtures, it's assumed that mixture (4) has conditions leading to a positive ΔG, indicating the least spontaneous forward reaction.

Consider the Following Gas-Phase Reaction of A2 (Shaded Spheres)and B2

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