CHEM 1001 Lecture Notes - Lecture 15: Joule, London Dispersion Force, In C

60 views5 pages

Document Summary

Chem 1001 problem set #3: entropy and free energy. 19. 11 trouton"s rule is obeyed most closely by liquids that do not have a high degree of order within the liquid. In both hf and ch oh, hydrogen bonds create considerable order within the liquid. In c h ch , the only attractive forces are non-directional london forces, which cause the molecules to attract each other, but have no preferred orientation as hydrogen bonds do. Thus, of the three choices, liquid c h ch would most closely follow trouton"s rule. 19. 19 first of all, the process is clearly spontaneous, and therefore dg < 0. In addition, the gases are more disordered when they are at a lower pressure and therefore. We also conclude that dh = 0, because the gases are ideal and thus there are no forces of attraction or repulsion between them, producing no energy of interaction.