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AP Chemistry
6.7 Bond Enthalpies
IntermediateMCQMathematical17.2k
A landfill-gas facility burns methane to generate thermal energy. The combustion reaction, with water produced as a gas, is represented by the equation

\(\text{CH}_4\text{(g)}+2\text{O}_2\text{(g)}\rightarrow\text{CO}_2\text{(g)}+2\text{H}_2\text{O(g)}\)

BondAverage bond dissociation energy (\(\text{kJ/mol}\))
\(\text{C-H}\)413
\(\text{O}=\text{O}\)498
\(\text{C}=\text{O}\) in \(\text{CO}_2\)799
\(\text{O-H}\)463

Based on the data, what is the estimated enthalpy change for the combustion of \(1\text{ mol}\) of \(\text{CH}_4\text{(g)}\)?

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