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Numerous areas of chemistry can benefit from the ongoing genomic revolution. Here, we discuss and highlight trends in chemistry in the postgenomic era. The areas of interest include combinatorial approaches in organic chemistry; design and analysis of proteins containing unnatural amino acids; trace element-containing proteins; design and characterization of new enzyme types; applications of postgenomic chemistry in drug design; identification of lipid networks and global characterization of lipid molecular species; development of recombinant and selfproliferating polymers; and applications in food chemistry and bioanalytical chemistry based on new nanoanalytical systems and novel recognition elements.
Pure Appl. Chem., Vol. 77, No. 9, pp. 1641–1654, 2005.
IUPAC Technical Report
© 2005 IUPAC
IUPAC permission is acknowledged
Abstract
In this book the authors present the basic concepts of classic analytical chemistry related to gravimetric and volumetric methods. The statistical treatment of analytical data is considered separately and discussed in some detail. The experiments include all information necessary for them to be carried out.
All material is devoted to a semester long course so that the different experiments must be chosen from among the various options given. Many exercises have been added to strongly encourage students in the understanding of analytical problems.
The theory and practice shown in this teaching text provides a safe experience in fundamental chemical analysis, especially useful in teaching laboratories, in research and in industrial support laboratories.
Authors
N. Baccan
João C. de Andrade
Oswaldo E.S. Godinho
José S. Barone
Abstract
Traditionally, the concept of entropy exists only for equilibria, which then require the same for the Helmholtz’s and Gibbs’ energies, because these are defined from it. As a result, all thermodynamics is restricted to equilibria, although it usually includes quantities classified as mechanical, such as volume and internal energy, which are considered outside the existing equilibrium. Therefore, thermodynamics is the only subject in natural science that is proclaimed timeless. However, ever since this imposition was considered, even in the nineteenth century, some researchers rebelled against it. Modern thermodynamics of the continuous media, for which the thermodynamics of homogeneous media theory is an introduction, brings new light to this ancient controversy. In this work, the interpretation given by Boltzman and Planck, who never accepted restricting the concept of entropy to equilibrium states, is advocated by current ideas.
Keywords
entropy, Helmholtz energy, Gibbs energy, second law of thermodynamics, stability, equilibrium
Author
Adalberto B. M. S. Bassi
Universidade Estadual de Campinas, Instituto de Química
Translated by
João C. de Andrade
Revised by
Carol H. Collins
