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Heat oreactioforCO(g)+½O2(g)→CO2(g)at constant Vis–67.71Kcal at17°C.Theheatof reactionatconstantPat17°Cis-

  1. 68.0Kcal    
  2. +68.0Kcal    
  3. 67.42Kcal    
  4. None    

The correct answer is: –68.0Kcal

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