Question

Calculate the reaction enthalpy, ΔH, for the following reaction:     CH4(g)+2O2(g)→CO2(g)+2H2O(l) Use the series of reactions that follow:

  1. C(s)+2H2(g)→CH4(g), ΔH =−74.8 kJ.
  2. C(s)+O2(g)→CO2(g), ΔH =−393.5 kJ.
  3. 2H2(g)+O2(g)→2H2O(g), ΔH =−484.0 kJ.
  4. H2O(l)→H2O(g), ΔH =44.0 kJ.
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