CHEM1112 Lecture Notes - Lecture 20: Kolmogorov Space
19 May 2018
School
Department
Course
Professor
Define entropy in terms of the tendency of energy to spread out
Entropy (S) - measure of the number of ways energy is distributed throughout a chemical system
20.1
Saturday, 28 October 2017
8:18 PM
20. Entropy Page 1
Document Summary
Define entropy in terms of the tendency of energy to spread out. Entropy (s) - measure of the number of ways energy is distributed throughout a chemical system: entropy page 1. Predict how entropy changes with the physical state, the temperature, the size of the molecule and the complexity of a molecule. Entropy - number of ways energy can be distributed in the system. Spontaneous processes tend to proceed from states of low probability to states of higher probability. Higher probability states have more options for distributing energy among the molecules. Larger the value of entropy -> the more energetically equivalent versions there are of the system, so higher statistical probability. Higher the temp -> higher the entropy e. g. when a substance is a solid at temps close to absolute zero (t=0), its particles are essentially motionless. Little kinetic energy, so few ways to distribute kinetic energy among the particles.
