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GivenenthalpyofformationofCO2(g)andCaO(s) are–94.0KJand–152KJrespectivelyandthe enthalpyofthereaction-CaCO3(s)CaO(s)+CO2(g) is42KJ.The enthalpyofformationofCaCO3(s)

  1. 42KJ    
  2. 202KJ    
  3. +202KJ    
  4. 288KJ    

The correct answer is: –288KJ

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