Chemistry 9701 · AS & A Level · Chemical energetics

Chemical energetics — practice question

The standard enthalpy change of combustion of carbon is $-394\,\text{kJ mol}^{-1}$. The standard enthalpy change of combustion of hydrogen is $-286\,\text{kJ mol}^{-1}$. The standard enthalpy change of formation of butane is $-129\,\text{kJ mol}^{-1}$. Determine the standard enthalpy change of combustion of butane.

  • A$-551\,\text{kJ mol}^{-1}$
  • B$-2877\,\text{kJ mol}^{-1}$
  • C$-3135\,\text{kJ mol}^{-1}$
  • D$-4307\,\text{kJ mol}^{-1}$

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