Chemistry: The Molecular Science (5th Edition)

Published by Cengage Learning
ISBN 10: 1285199049
ISBN 13: 978-1-28519-904-7

Chapter 16 - Thermodynamics: Directionality of Chemical Reactions - Problem Solving Practice 16.5 - Page 712: b

Answer

$-29.10\,kJ/mol$ The result obtained here and in the previous part are the same.

Work Step by Step

$\Delta _{r}G^{\circ}=\Sigma n_{p}\Delta G_{f}^{\circ}(products)-\Sigma n_{r}\Delta G_{f}^{\circ}(reactants)$ $=[\Delta G_{f}^{\circ}(CH_{3}OH,l)]-[\Delta G_{f}^{\circ}(CO,g)+2\Delta G_{f}^{\circ}(H_{2},g)]$ $=(-166.27\,kJ/mol)-[(-137.168\,kJ/mol)+2(0)]$ $=-29.10\,kJ/mol$ The result obtained here and in the previous part are the same.
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