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Fowhich of thfollowinreactions ΔH is less than ΔE-

  1. C12H22O11(s)+6O2(g)→6CO2(g)+6H2O(ell)    
  2. 2SO2(g)+O2(g)→2SO3(g)    
  3. N2O4(g)→2NO2(g)    
  4. N2(g)+O2(g)→2NO(g)    

The correct answer is: 2SO2(g)+O2(g)→2SO3(g)

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