## Chemistry and Chemical Reactivity (9th Edition)

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