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TheDH° for CO2(g) ,CO(g) and H2O(g) are 393.5,–110.5and–241.8Kjmol1respectively the standard enthalpychange (in KJ) for the reactionCO2(g)+H2(g)→CO(g)+H2O(g)is-

  1. 524.1    
  2. 41.2    
  3. – 262.5    
  4. 41.2    

The correct answer is: 41.2

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