Topical Questions These questions are keyed to major topics in the chapter. Usually a q...

Topical Questions

These questions are keyed to major topics in the chapter. Usually a question that is answered at the back of this book is paired with a similar one that is not.

The standard molar entropy of methanol vapor, CH₃OH(g), is 239.8 J K^-1 mol^-1.

(a) Calculate the entropy change for the vaporization of 1 mol methanol (use data from Table 18.1 or Appendix J).

(b) Calculate the enthalpy of vaporization of methanol, assuming that ΔS° doesn’t depend on temperature and taking the boiling point of methanol to be 64.6 °C.

from Table 18.1