Rank the standard molar entropy of the following from lowest to highest.
1. H₂O(l)
2. H₂O(g)
3. H2O₂(l)
4. H₂O₂(aq)

Question

Rank the standard molar entropy of the following from lowest to highest. 1. H₂O(l) 2. H₂O(g) 3. H2O₂(l) 4. H₂O₂(aq) A)4 < 1 < 3 < 2 B)1 < 3 < 4 < 2 C)3 < 1 < 4 < 2 D)2 < 4 < 3 < 1 E)1 < 3 < 2 < 4

Quizplus · Accepted Answer

The standard molar entropy generally increases from liquid to gas due to increased molecular disorder. Therefore, H₂O(g) has the highest entropy. Among liquids, H₂O₂(l) has higher entropy than H₂O(l) due to its larger molecular size and complexity. H₂O₂(aq) has higher entropy than H₂O(l) but lower than H₂O(g).

Rank the Standard Molar Entropy of the Following from Lowest