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 217c: 51


$+90.2\ kJ/mol$

Work Step by Step

Manipulating the given reactions: $\begin{smallmatrix} 1/2\ N_2(g)+3/2\ H_2(g)&\rightarrow&NH_3(g)&-45.9\ kJ/mol\\ NH_3(g)+5/4\ O_2(g)&\rightarrow&NO(g)+3/2\ H_2O(g)&-226.6\ kJ/mol\\ 3/2\ H_2O(g)&\rightarrow& 3/2\ H_2(g)+3/4\ O_2(g)&+362.7\ kJ/mol\\ \hline\\ 1/2\ N_2(g)+1/2\ O_2(g)&\rightarrow&NO(g)&+90.2\ kJ/mol \end{smallmatrix}$
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