AP Chemistry
4.9 Oxidation-Reduction (Redox) Reactions
4.7 Types of Chemical Reactions
4.5 Stoichiometry
A student investigates the complete combustion of ethanol, \(\text{C}_2\text{H}_5\text{OH}\), as a renewable fuel. The balanced chemical equation for the combustion reaction is shown below.
\[ \text{C}_2\text{H}_5\text{OH}(l) + 3\,\text{O}_2(g) \rightarrow 2\,\text{CO}_2(g) + 3\,\text{H}_2\text{O}(l) \]
Based on the oxidation numbers of the elements in the reactants and products, what is the total number of moles of electrons transferred per mole of \(\text{C}_2\text{H}_5\text{OH}(l)\) consumed?
\[ \text{C}_2\text{H}_5\text{OH}(l) + 3\,\text{O}_2(g) \rightarrow 2\,\text{CO}_2(g) + 3\,\text{H}_2\text{O}(l) \]
Based on the oxidation numbers of the elements in the reactants and products, what is the total number of moles of electrons transferred per mole of \(\text{C}_2\text{H}_5\text{OH}(l)\) consumed?
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