Several reactions that occur in the atmosphere are listed below at 298 K.
I. 2 O₃(g) ⟶ 3 O₂(g)
II. H₂O(l) ⟶ H₂O(g)
III. N₂(g) + 3 H₂(g) ⟶ 2 NH₃(g)
(a) For each reaction, predict whether the standard entropy change, ΔS°, is positive, negative, or approximately zero.
(b) Select ONE of the reactions and describe, in a short paragraph, the molecular-level changes in matter dispersal that justify the sign you predicted.
(c) Among the three reactions, identify which has the largest magnitude |ΔS°| and justify your choice by comparing the relevant changes in freedom of motion of the particles involved.
(a) Prediction of the sign of ΔS° for each reaction
(b) Molecular-level explanation for one selected reaction
(c) Comparison to determine the reaction with the largest |ΔS°|