The standard Gibbs free energy change at 25 ºC is 2866 J/mol. What pressure is needed to concert graphite to carbon at 25 ºC. You can assume both solids to be incompressible and that the density of graphite and diamond to be 2.25 g/cm3 and 3.52 g/cm3 respectively.

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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3. For the reaction (or phase transition):


C (graphite) ↔ C (diamond)


The standard Gibbs free energy change at 25 ºC is 2866 J/mol. What pressure is needed to concert graphite to carbon at 25 ºC. You can assume both solids to be incompressible and that the density of graphite and diamond to be 2.25 g/cm3 and 3.52 g/cm3 respectively.

 

Book: Introduction to Chemical engineering Thermodynamics 8 edition

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