Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 5 Principles of Chemical Reactivity: Energy and Chemical Reactions - Study Questions - Page 217j: 116


$-276.9\ kJ/mol$

Work Step by Step

From the data given: $\begin{smallmatrix} 2\ C(s)+2\ O_2(g)&\rightarrow&2\ CO_2(g)&-787\ kJ/mol\\ 2\ CO_2(g)+3\ H_2O(l)&\rightarrow&3\ O_2(g)+C_2H_5OH(l)&+1367.5\ kJ/mol\\ 3\ H_2(g)+3/2\ O_2(g)&\rightarrow&3\ H_2O(l)&-857.4\ kJ/mol\\ \hline\\ 2\ C(s)+3\ H_2(g)+1/2\ O_2(g)&\rightarrow&C_2H_5OH(l)&-276.9\ kJ/mol \end{smallmatrix}$
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