# Determine ΔE for octane combustion in units of kJ/mol octane.When a 4.50-g sample of liquid octane (C8H18) is burned in a bomb calorimeter, the temperature of the calorimeter rises by 26.6 ∘C. The heat capacity of the calorimeter, measured in a separate experiment, is 6.20 kJ/∘C .

Question

Determine ΔE for octane combustion in units of kJ/mol octane.
When a 4.50-g sample of liquid octane (C8H18) is burned in a bomb calorimeter, the temperature of the calorimeter rises by 26.6 ∘C. The heat capacity of the calorimeter, measured in a separate experiment, is 6.20 kJ/∘C .

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Step 1

The temperature of the calorimeter is raised by 26.6 degree Celsius, so this amount of heat was absorbed by the bomb calorimeter.

Step 2

This heat energy was released by the octane burning process.

Calculate the moles of burned octane

Step 3

Calculate the enthalpy of comb...

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