Isooctane (C8H18) is one of the many hydrocarbons that make up gasoline.  Write a complete balanced thermochemical equation for the combustion of isooctane if 10,940 kJ/mol of heat is produced in the combustion of 2 moles of isooctane.  Assume the water produced is in the liquid state. Calculate the amount of heat involved when 1.00 L of C8H18 undergoes combustion with 1000.0 g of oxygen gas.  (density C8H18 = 0.69 g/mL) Is this an endothermic or exothermic reaction?

Chemistry: Principles and Practice
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Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
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Chapter5: Thermochemistry
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Isooctane (C8H18) is one of the many hydrocarbons that make up gasoline. 
  • Write a complete balanced thermochemical equation for the combustion of isooctane if 10,940 kJ/mol of heat is produced in the combustion of 2 moles of isooctane.  Assume the water produced is in the liquid state.

  • Calculate the amount of heat involved when 1.00 L of C8H18 undergoes combustion with 1000.0 g of oxygen gas.  (density C8H18 = 0.69 g/mL)

  • Is this an endothermic or exothermic reaction?
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