Question 1
Given the following data, estimate the boiling point of carbon disulfide, CS
2, assuming that ΔS° and ΔH° are temperature-independent.
| ΔH°f (kJ/mol) | S° (J/K·mol) |
CS2(g) | 115.3 | 237.8 |
CS2(l) | 87.3 | 151.0 |
Question 2
Rubidium has a heat of vaporization of 69.0 kJ/mol at its boiling point (686°C). Calculate ΔS for this process, Rb(l) → Rb(g), at 1 atm and 686°C.