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C subscript 6 end subscript H subscript 6 end subscript rightwards arrow C subscript 6 end subscript H subscript 12 end subscript capital delta H equals negative 204 K J 204 kjheat of hydrognentaion of each C=C bond in benzene

  1. -68 kJ    
  2. - 93kJ    
  3. -56kJ    
  4. -88 kJ    

The correct answer is: -68 kJ

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