LECTURE PHYSICAL CHEMISTRY 3rd EDITION ROBERT G. MORTIMER

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www.daykemquynhon.ucoz.com Entropy Changes for Nonadiabatic Processes Consider a closed system and its surroundings arranged as in Figure 3.8. We call the system plus its surroundings the “combination” and assume that the combination is isolated from the rest of the universe and can undergo only adiabatic processes. The entropy of the combination is the sum of the entropy of the system and the entropy of the surroundings: https://plus.google.com/+DạyKèmQuyNhơn Collected by Nguyen Thanh Tu Teacher MailBox : nguyenthanhtuteacher@hotmail.com
www.daykemquynhon.ucoz.com Since the combination can undergo only adiabatic processes, In order to focus on the system, we rewrite Eq. (3.2- 24) in the form It is not necessary that dS be positive. However, if dS is negative, then dS surr must be positive and large enough that the sum dS + dS surr is not negative. Since we wish to focus our attention on the system, we make the simplest possible assumption about the surroundings. We assume that the heat capacity and thermal conductivity of the surroundings are so large that all processes in the surroundings can be considered to be reversible. https://plus.google.com/+DạyKèmQuyNhơn Collected by Nguyen Thanh Tu Teacher MailBox : nguyenthanhtuteacher@hotmail.com
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LECTURE PHYSICAL CHEMISTRY 3rd EDITION ROBERT G. MORTIMER

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