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Question

The H – H bond energy is 430 kJ mole–1 & Cl – Cl bond energy is 240 kJ mole–1. (capital deltaH)f for HClis – 90kJ. The H – Cl bond energy is about

  1. 425 kJ mole–1    
  2. 213 kJ mole–1    
  3. 360 kJ mole–1    
  4. 180 kJ mole–1    

The correct answer is: 425 kJ mole–1

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