Chapter 19, Problem 40E

For each of the following pairs, predict which substance possesses the larger entropy per mole:

a. 1 mol of O₂ (g) at 300 o C, 0.01 atm, or 1 mol of O₃ (g) at 300 ^oC, 0.01 atm;
b. 1 mol of H₂O (g) at 100 o C, 1 atm, or v1 mol of H₂O (l) at 100^oC, 1 atm;
c. 0.5 mol of N₂ (g) at 298 K, 20-L volume, or 0.5 mol CH₄ (g) at 298 K, 20-L volume;
d. 100 g Na₂SO₄(s) at 30 o C or 100 g Na₂SO₄ (aq) at 30 o C.