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Modern Thermodynamics for Chemists and Biochemists$
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Dennis Sherwood and Paul Dalby

Print publication date: 2018

Print ISBN-13: 9780198782957

Published to Oxford Scholarship Online: August 2018

DOI: 10.1093/oso/9780198782957.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2020. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 31 October 2020

Free energy

Free energy

(p.365) 13 Free energy
Modern Thermodynamics for Chemists and Biochemists

Dennis Sherwood

Paul Dalby

Oxford University Press

A critical chapter, explaining how the principles of thermodynamics can be applied to real systems. The central concept is the Gibbs free energy, which is explored in depth, with many examples. Specific topics addressed are: Spontaneous changes in closed systems. Definitions and mathematical properties of Gibbs free energy and Helmholtz free energy. Enthalpy- and entropy-driven reactions. Maximum available work. Coupled reactions, and how to make non-spontaneous changes happen, with examples such as tidying a room, life, and global warming. Standard Gibbs free energies. Mixtures, partial molar quantities and the chemical potential.

Keywords:   spontaneous change, non-spontaneous change, Gibbs free energy, enthalpy-driven reaction, entropy-driven reaction, Helmholtz free energy, maximum available work, coupled systems, friction, global warming, climate change, mixtures, chemical potential

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