CH353
- Physical Chemistry I Spring 2012, Unique 52135 Lecture Summary, 13 February 2012 |

Molar
entropy: Today we looked at patterns for the
magnitude of molar entropy for similar compounds at the standard
state. We made a few conclusions:1) Molar entropy increases with FW 2) Molar entropy increases with additional phase transformations. 3) Molar entropy increases with conformational degrees of freedom from molecular structure. Microstates: All of this implies that there
is a molecular mechanism for entropy. Today we quantified this
by defining microstates: experimentally indistinguishable
configurations that all lead to a single experimentally
distinguishable outcome. The more microstates available to a
system, the higher its entropy. A system will move
spontaneously in the direction of increasing microstates. |