In an energy balance, what are the two most common references (datums) used for enthalpy and entropy? Does one have an advantage over the other?

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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In an energy balance, what are the two most common references (datums) used for enthalpy and entropy? Does one have an advantage over the other?

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