Physical Chemistry from a Different Angle: Introducing Chemical Equilibrium, Kinetics and Electrochemistry by Numerous Experiments by Georg Job and Regina Ruffler.
Physical Chemistry from a Different Angle pdf.
Preface of Physical Chemistry from a Different Angle book:
Experience has shown that two fundamental thermodynamic quantities are especially difficult to grasp: entropy and chemical potential—entropy S as quantity associated with temperature T and chemical potential μ as quantity associated with the amount of substance n. The pair S and T are responsible for all kinds of heat effects, whereas the pair μ and n control all the processes involving substances such as chemical reactions, phase transitions, or spreading in space. It turns out that S and μ are compatible with a layperson’s conception.
In this book, a simpler approach to these central quantities—in addition to energy—is proposed for the first-year students. The quantities are characterized by their typical and easily observable properties, i.e., by creating a kind of “wanted poster” for them. This phenomenological description is supported by a direct measuring procedure, a method that has been common practice for the quantification of basic concepts such as length, time, or mass for a long time.
The proposed approach leads directly to practical results such as the prediction—based upon the chemical potential—of whether or not a reaction runs spontaneously. Moreover, the chemical potential is key in dealing with physicochemical problems. Based on this central concept, it is possible to explore many other fields. The dependence of the chemical potential upon temperature, pressure, and concentration is the “gateway” to the deduction of the mass action law, the calculation of equilibrium constants, solubilities, and many other data, the construction of phase diagrams, and so on. It is simple to expand the concept to colligative phenomena, diffusion processes, surface effects, electrochemical processes, etc. Furthermore, the same tools allow us to solve problems even at the atomic and molecular levels, which are usually treated by quantum statistical methods. This approach allows us to eliminate many thermodynamic quantities that are traditionally used such as enthalpy H, Gibbs energy G, activity a, etc. The usage of these quantities is not excluded but superfluous in most cases. An optimized calculus results in short calculations, which are intuitively predictable and can be easily verified.
The book discusses the principles of matter dynamics in three parts,
• Basic concepts and chemical equilibria (statics),
• Progression of transformations of substances in time (kinetics),
• Interaction of chemical phenomena and electric fields (electrochemistry)
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