A Sample of Hexane Combustion Calculation

Calculating Heat Production from the Combustion of Hexane

A sample of hexane (C6H14) has a mass of 0.580 g. The sample is burned in a bomb calorimeter that has a mass of 1.900 kg and a specific heat of 3.21 J/giK. What amount of heat is produced during the combustion of hexane if the temperature of the calorimeter increases by 4.542 K? Use mc017-1.jpg.

Options:

  • 8.46 kJ
  • 16.1 kJ
  • 27.7 kJ
  • 47.8 kJ

The answer is 27.7 kJ

Calculation:

According to this equation:
q = M C ΔT

Where:
q = the energy produced when there is a difference in temperature.

M (g) = amount of the material = 1.900 Kg = 1900 g

ΔT = difference in temperature (in kelvin) = 4.542 K

C = Specific heat capacity = 3.21

Therefore,
q = 1900 * 4.542 * 3.21 = 27701.7 J = 27.7 kJ

What is the amount of heat produced during the combustion of hexane in the bomb calorimeter? 27.7 kJ
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