AP Chemistry
6.6 Introduction to Enthalpy of Reaction
Propane, \(\text{C}_3\text{H}_8(g)\), undergoes complete combustion according to the following thermochemical equation:
\[\text{C}_3\text{H}_8(g) + 5\text{O}_2(g) \rightarrow 3\text{CO}_2(g) + 4\text{H}_2\text{O}(l) \quad \Delta H^\circ_{rxn} = -2200 \text{ kJ/mol}_{rxn}\]
What amount of heat is released when a \(4.40 \text{ g}\) sample of \(\text{C}_3\text{H}_8(g)\) (molar mass \(44.0 \text{ g/mol}\)) is completely burned in excess oxygen?
\[\text{C}_3\text{H}_8(g) + 5\text{O}_2(g) \rightarrow 3\text{CO}_2(g) + 4\text{H}_2\text{O}(l) \quad \Delta H^\circ_{rxn} = -2200 \text{ kJ/mol}_{rxn}\]
What amount of heat is released when a \(4.40 \text{ g}\) sample of \(\text{C}_3\text{H}_8(g)\) (molar mass \(44.0 \text{ g/mol}\)) is completely burned in excess oxygen?
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