Thermodynamics 3rd Edition: Heat Capacity, Enthalpy, Entropy & Free Energy

Parris PhD, George E

ISBN 10: 1092263039 / ISBN 13: 9781092263030

Published by Independently published, 2019

About this Item

103 pages. 9.00x6.00x0.26 inches. In Stock.

Seller Inventory # zk1092263039

Bibliographic Details

• Title: Thermodynamics 3rd Edition: Heat Capacity, Enthalpy, Entropy & Free Energy
• Publisher: Independently published
• Publication Date: 2019
• Language: English
• ISBN 10: 1092263039
• ISBN 13: 9781092263030
• Binding: Paperback
• Condition: Brand New

About this title

Synopsis

Preface to the 3nd EditionAs noted in the 1st edition (2015) and 2nd Edition (2017) this lecture is targeted at molecular scientists, not engineers or physicists. I have done my best to demystify the concepts described here. In my opinion, textbook authors since 1900 have rarely understood Clausius, Maxwell, Boltzmann, Gibbs or Nernst and have resorted to hand-waving arguments, which obscure understanding. I think it is useful to examine the history of these concepts because it cuts through some of the mystery. In the 2nd edition, I have generally cleaned up the original text, added references to clarify and support the original discussion; summarized the historical development of enthalpy and entropy, and included supplemental material on the statistical interpretation of entropy. I also mention the methods by which enthalpy and entropy are normally determined experimentally. In the 3rd edition I have extended the vibrational concept to heat capacity to simple salts (which are analyzed as moles of ions) and use this to show examples where the heat capacity is essentially constant (0-298oK) and thus the heat capacity at 298oK is the average heat capacity (0-298oK) and hence is the standard entropy (S298). This is one of the principal conclusions of Clausius. A surprising development came out of my analysis (in the 2nd edition) when I considered the case where the temperature of a system approaches absolute zero. I think the result is applicable to the phenomenon of superconductivity. However, a superficial reading of some of the theory of solid-state physics leaves me uncomfortable with the results. The solid-state physicists use an entirely different vocabulary and it is not clear to me at this time where these theories merge with chemistry (as they must). The phenomenon of superconductivity appears to be a phase change involving only the electrons. When the motions of the ion-cores that make up metals and semiconductors drop below a certain level (e.g., vibrational energy in the ground state at least transverse to the direction of current), the electrons have undisturbed continuous paths of travel; hence, the de Broglie wavelengths (i.e., wave functions) of the electrons approach the physical dimension of the conductor and the conductor becomes superconducting. Criticisms of the manuscript are welcomed.