Problem: Using the following equation for the combustion of octane, calculate the heat associated with the combustion of excess octane with 100.0 g of oxygen assuming complete combustion. The molar mass of octane is 114.33 g/mole. The molar mass of oxygen is 31.9988 g/mole.2 C8H18 + 25 O2 → 16 CO2 + 18 H2O            ΔH∘rxn = -11018 kJa. -1377 kJb. -4304 kJc. -11018 kJd. -2152 kJe. -17220 kJ

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Problem Details

Using the following equation for the combustion of octane, calculate the heat associated with the combustion of excess octane with 100.0 g of oxygen assuming complete combustion. The molar mass of octane is 114.33 g/mole. The molar mass of oxygen is 31.9988 g/mole.

2 C8H18 + 25 O2 → 16 CO2 + 18 H2O            ΔHrxn = -11018 kJ

a. -1377 kJ

b. -4304 kJ

c. -11018 kJ

d. -2152 kJ

e. -17220 kJ

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