Aqueous Acid-base Equilibria and Titrations

Author: Robert De Levie

Publisher: Oxford University Press on Demand

ISBN: 9780198506171

Category: Science

Page: 91

View: 6419

This book will give students a thorough grounding in pH and associated equilibria, material absolutely fundamental to the understanding of many aspects of chemistry. It is, in addition, a fresh and modern approach to a topic all too often taught in an out-moded way. This book uses new theoretical developments which have led to more generalized approaches to equilibrium problems; these approaches are often simpler than the approximations which they replace. Acid-base problems are readily addressed in terms of the proton condition, a convenient amalgam of the mass and charge constraints of the chemical system considered. The graphical approach of Bjerrum, Hagg, and Sillen is used to illustrate the orders of magnitude of the concentrations of the various species involved in chemical equilibria. Based on these concentrations, the proton condition can usually be simplified, often leading directly to the value of the pH. In the description of acid-base titrations a general master equation is developed. It provides a continuous and complete description of the entire titration curve, which can then be used for computer-based comparison with experimental data. Graphical estimates of the steepness of titration curves are also developed, from which the practicality of a given titration can be anticipated. Activity effects are described in detail, including their effect on titration curves. The discussion emphasizes the distinction between equilibrium constants and electrometric pH measurements, which are subject to activity corrections, and balance equations and spectroscopic pH measurements, which are not. Finally, an entire chapter is devoted to what the pH meter measures, and to the experimental and theoretical uncertainties involved.
Posted in Science

Principles of Quantitative Chemical Analysis

Author: Robert De Levie

Publisher: McGraw-Hill College

ISBN: 9780070163621

Category: Science

Page: 737

View: 9926

Designed for a sophomore/junior course in analytical chemistry or quantitative analysis, this text focuses on the quantitative aspects of the discipline using a unified approach. Emphasis is placed on developing visual tools for understanding complicated solution equilibria. To these ends, extensive use is made of graphical methods, such as the easily sketched stick diagrams, which can be used to guide analytical calculations and takes the guesswork out of numerical approximations. Optional spreadsheet exercises are closely integrated with the text and can therefore serve to introduce the student to the use of computers for chemical calculations.
Posted in Science

Computer Based Projects for a Chemistry Curriculum

Author: Thomas J. Manning,Aurora P. Gramatges

Publisher: Bentham Science Publishers

ISBN: 1608051935

Category: Science

Page: 243

View: 8118

This e-book is a collection of exercises designed for students studying chemistry courses at a high school or undergraduate level. The e-book contains 24 chapters each containing various activities employing applications such as MS excel (spreadsheets) and Spartan (computational modeling). Each project is explained in a simple, easy-to-understand manner. The content within this book is suitable as a guide for both teachers and students and each chapter is supplemented with practice guidelines and exercises. Computer Based Projects for a Chemistry Curriculum therefore serves to bring computer based learning – a much needed addition in line with modern educational trends – to the chemistry classroom.
Posted in Science

Liquids, Solutions, and Interfaces

From Classical Macroscopic Descriptions to Modern Microscopic Details

Author: W. Ronald Fawcett

Publisher: Oxford University Press

ISBN: 9780198025443

Category: Science

Page: 638

View: 3573

Fifty years ago solution chemistry occupied a major fraction of physical chemistry textbooks, and dealt mainly with classical thermodynamics, phase equilibria, and non-equilibrium phenomena, especially those related to electrochemistry. Much has happened in the intervening period, with tremendous advances in theory and the development of important new experimental techniques. This book brings the reader through the developments from classical macroscopic descriptions to more modern microscopic details.
Posted in Science

Advanced Excel for Scientific Data Analysis

Author: Robert De Levie

Publisher: Oxford University Press, USA

ISBN: 0195152751

Category: Science

Page: 615

View: 4871

Excel is by far the most widely distributed data analysis software but few users are aware of its full powers. Advanced Excel For Scientific Data Analysis takes off from where most books dealing with scientific applications of Excel end. It focuses on three areas-least squares, Fourier transformation, and digital simulation-and illustrates these with extensive examples, often taken from the literature. It also includes and describes a number of sample macros and functions to facilitate common data analysis tasks. These macros and functions are provided in uncompiled, computer-readable, easily modifiable form; readers can therefore use them as starting points for making their own personalized data analysis tools. Detailed descriptions and sample applications of standard and specialized uses of least squares for fitting data to a variety of functions, including resolving multi-component spectra; standard processes such as calibration curves and extrapolation; custom macros for general "error" propagation, standard deviations of Solver results, weighted or equidistant least squares, Gram-Schmidt orthogonalization, Fourier transformation, convolution and deconvolution, time-frequency analysis, and data mapping. There are also worked examples showing how to use centering, the covariance matrix, imprecision contours, and Wiener filtering and custom functions for bisections, Lagrange interpolation, Euler and Runge-Kutta integration.
Posted in Science

Organometallics: Complexes with transition metal-carbon [sigma]-bonds

Author: Manfred Bochmann

Publisher: Oxford Chemistry Primers

ISBN: 0198557507

Category: Language Arts & Disciplines

Page: 91

View: 4807

This succinct text outlines the main classes of transition metal organometallic complexes and introduces the reader to the chemistry of compounds with metal-carbon s-bonds: metal carbonyls, metal alkyls, and metal alkylidenes and alkylidnes. The synthetic methods leading to each class ofcompounds are illustrated with pertinent examples, followed by the discussion of characteristic structures and reactivity patterns. The aim is to allow undergraduate students a quick overview over this area of chemistry. Highlights and excursions stress general principles and relate the materialto specific applications such as catalytic processes.
Posted in Language Arts & Disciplines

Radical Chemistry

The Fundamentals

Author: Michael John Perkins

Publisher: Oxford University Press, USA

ISBN: N.A

Category: Science

Page: 92

View: 9433

Aimed at students with a grounding in organic chemistry, this Primer presents radical chemistry in a modern context, where reactive radicals are recognized both as mediators of many disease conditions, and as key players in mechanisms of enzyme action.
Posted in Science

Computers in Chemistry

Author: Pete Biggs

Publisher: Oxford University Press on Demand

ISBN: N.A

Category: Science

Page: 90

View: 6695

This Primer provides an authoritative and easy to read overview of computers and their use in chemistry. It presents the essential basic ideas required to understand and exploit computers as encountered by chemistry students in their studies and in the laboratory at all stages up to and including research level. It gives its readers an insight into the workings of computers and so helps them to use the facilities more effectively.
Posted in Science

Radiation Heat Transfer

Author: Howard Richard Neil Jones

Publisher: Oxford University Press on Demand

ISBN: N.A

Category: Science

Page: 86

View: 8409

Introduces radiation heat transfer to undergraduate and postgraduate students working in an engineering environment, who have no prior knowledge of the subject.
Posted in Science

Sonochemistry

Author: T. J. Mason

Publisher: Oxford University Press, USA

ISBN: N.A

Category: Science

Page: 92

View: 9692

It has been recognised for many years that power ultrasound has great potential for uses in a wide variety of processes in the chemical and allied industries. Reported applications include cleaning, sterilisation, flotation, drying, degassing, defoaming, soldering, plastic welding, drilling, filtration, homogenisation, emulsification, dissolution, deaggregation of powder, biological cell disruption, extraction, crystallisation and, more recently, as a stimulus for chemical reactions. With the increasing use of power ultrasound in chemistry comes the need for specialist text books covering this emerging discipline. This book is suitable for chemists and chemical engineers at all levels who wish to gain a rapid insight into what is becoming a standard method in the chemical laboratory. It is designed to answer the following questions: What is sonochemistry? Why is it important? What systems are affected by sonochemistry? What are the major applications of this technique? What types of ultrasonic equipment are available? How do the different types of equipment compare? How is the equipment best configured for chemical applications? What parameters can be changed to optimise sonochemical results? What equipment is available for the scale-up of sonochemistry?
Posted in Science

Organische Chemie

Author: Jonathan Clayden,Nick Greeves,Stuart Warren

Publisher: Springer Spektrum

ISBN: 9783642347153

Category: Science

Page: 1366

View: 1227

Ein neuer Stern am Lehrbuch-Himmel: Organische Chemie von Clayden, Greeves, Warren - der ideale Begleiter für alle Chemiestudenten. Der Schwerpunkt dieses didaktisch durchdachten, umfassenden vierfarbigen Lehrbuches liegt auf dem Verständnis von Mechanismen, Strukturen und Prozessen, nicht auf dem Lernen von Fakten. Organische Chemie entpuppt sich als dabei als ein kohärentes Ganzes, mit zahlreichen logischen Verbindungen und Konsequenzen sowie einer grundlegenden Struktur und Sprache. Dank der Betonung von Reaktionsmechanismen, Orbitalen und Stereochemie gewinnen die Studierenden ein solides Verständnis der wichtigsten Faktoren, die für alle organisch-chemischen Reaktionen gelten. So lernen sie, auch Reaktionen, die ihnen bisher unbekannt waren, zu interpretieren und ihren Ablauf vorherzusagen. Der direkte, persönliche, studentenfreundliche Schreibstil motiviert die Leser, mehr erfahren zu wollen. Umfangreiche Online-Materialien führen das Lernen über das gedruckte Buch hinaus und vertiefen das Verständnis noch weiter.
Posted in Science

Supramolekulare Chemie

Eine Einführung

Author: Fritz Vögtle

Publisher: Springer-Verlag

ISBN: 3663117715

Category: Technology & Engineering

Page: 451

View: 8983

Posted in Technology & Engineering

Industrielle Organische Pigmente

Herstellung, Eigenschaften, Anwendung

Author: Willy Herbst,Klaus Hunger

Publisher: John Wiley & Sons

ISBN: 3527624961

Category: Science

Page: 670

View: 6818

Das Buch ist eine in dieser Form und in diesem Umfang bislang konkurrenzlose Gesamtdarstellung der organischen Pigmente (Chem. Rundschau) auf dem Markt und gibt einen umfassenden Überblick über anwendungstechnische Begriffe, Prüfmethoden, Herstellung, Eigenschaften und Anwendung industriell genutzter organischer Pigmente. Die Angaben sind vergleichbar, unter denselben Bedingungen ermittelt, und darin liegt ein unschätzbarer Vorteil für jeden, der sich mit organischen Pigmenten beschäftigt: Forscher, Anwender und Pigmentverarbeiter in der Druckfarben-, Lack- und Kunststoffindustrie und in vielen anderen Industriezweigen. '... ein äußerst vielseitiges Nachschlagewerk ... und es fällt schwer, ein Thema aus dem Gebiet der organischen Pigmente zu finden, zu dem es die Auskunft schuldig bliebe.' Ecochem '... Die Darstellung ist durchweg von hervorragender Qualität, und das Buch wird das Standard-Referenzwerk auf dem Pigmentgebiet werden ...' Dyes and Pigments '... ist das umfassendste Buch auf diesem Gebiet, was in den letzten Jahren erschienen ist ...' Chemical Engineering World
Posted in Science

Anorganische Chemie

Author: Duward F. Shriver,Peter W. Atkins,Cooper H. Langford

Publisher: John Wiley & Sons

ISBN: 9783527292509

Category: Science

Page: 909

View: 1756

Posted in Science

Molekülorbitale und Reaktionen organischer Verbindungen

Author: Ian Fleming

Publisher: John Wiley & Sons

ISBN: 3527330690

Category: Chemical bonds

Page: 399

View: 8870

Der lang erwartete Nachfolger des Klassikers "Grenzorbitale und Reaktionen organischer Verbindungen". Die Molekülorbitalheorie wird einfach, ohne komplizierte mathematische Formeln und mit vielen illustrativen Beispielen erklärt.
Posted in Chemical bonds