Which substance has the higher entropy (a) Dry ice (solid CO 2 ) at 78C or CO 2 (g) at 0C (b) Liquid water at 25C or liquid water at 50C (c) Pure alumina, A l2 O 3 (s), or ruby (ruby is Al 2 O 3 in which some Al 3 ions in the crystalline lattice are replaced with Cr 3 ions) (d) One mole of N 2 (g) ...

Entropy Larger molecules have higher entropy and smaller molecules have lower entr ...

Which substance has the higher entropy? (a) Dry ice (solid CO 2 ) at 78C or CO

Question:

Which substance has the higher entropy?
(a) Dry ice (solid CO₂) at −78°C or CO₂(g) at 0°C
(b) Liquid water at 25°C or liquid water at 50°C
(c) Pure alumina, A_l2O₃(s), or ruby (ruby is Al₂O₃ in which some Al³⁺ ions in the crystalline lattice are replaced with Cr³⁺ ions)
(d) One mole of N₂(g) at 1 bar pressure or one mole of N₂(g) at 10 bar pressure (both at 298 K)