4th Edition

ISBN: 8220102797864

Author: Burdge

Publisher: YUZU

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Chapter 5, Problem 123AP

For reactions in condensed phases ( liquids and solids), the difference between $Δ H$ and $Δ U$ is usually quite small. This statement holds for reactions carried out under atmospheric conditions. For certain geochemical processes, however, the external pressure may be so great that $Δ H$ and $Δ U$ At can differ by a significant amount. A well known example it the slow conversion of graphite to diamond under Earth's surface Calculate $Δ H − Δ U$ for the conversion of 1 mole of graphite to t mole of diamond at a pressure of 50.000 atm. The densities of graphite and diamond are $2 . 25g/ m 2 and 3 .52 g/c m 2$ , respectively.

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Chapter 5, Problem 122AP

Chapter 5, Problem 124AP

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Solution Summary: The author explains how the difference between Delta Hand Delto U for the conversion of graphite to diamond at a given pressure is to be calculated.

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