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Bond dissociation enthalpy of H2, Cl2 and HCl are 434 , 242 and 431 kJ mol–1 respectively.Enthalpy of formation of HCl is : [2008]
  • a)
    93 kJ mol–1
  • b)
    – 245 kJmol–1
  • c)
    – 93 kJmol–1
  • d)
    245 kJmol–1
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Bond dissociation enthalpy of H2, Cl2 and HCl are 434 , 242 and 431 kJ...
The reaction for formation of HCl can be written as H2 + Cl2 → 2HCI
H – H + Cl – Cl → 2 (H – Cl)
Substituting the given values, we get enthalpy of formation of 2HCl = – ( 862 – 676) = –186 kJ.
∴     Enthalpy of formation of
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Most Upvoted Answer
Bond dissociation enthalpy of H2, Cl2 and HCl are 434 , 242 and 431 kJ...
The bond dissociation enthalpy values provided are incorrect. The correct values for the bond dissociation enthalpies of H2, Cl2, and HCl are as follows:

H2: 436 kJ/mol
Cl2: 242 kJ/mol
HCl: 431 kJ/mol
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Community Answer
Bond dissociation enthalpy of H2, Cl2 and HCl are 434 , 242 and 431 kJ...
1/2{434+242-2(431)}=-93
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Bond dissociation enthalpy of H2, Cl2 and HCl are 434 , 242 and 431 kJ mol–1 respectively.Enthalpy of formation of HCl is : [2008]a)93 kJ mol–1b)– 245 kJmol–1c)– 93 kJmol–1d)245 kJmol–1Correct answer is option 'C'. Can you explain this answer?
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Bond dissociation enthalpy of H2, Cl2 and HCl are 434 , 242 and 431 kJ mol–1 respectively.Enthalpy of formation of HCl is : [2008]a)93 kJ mol–1b)– 245 kJmol–1c)– 93 kJmol–1d)245 kJmol–1Correct answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Bond dissociation enthalpy of H2, Cl2 and HCl are 434 , 242 and 431 kJ mol–1 respectively.Enthalpy of formation of HCl is : [2008]a)93 kJ mol–1b)– 245 kJmol–1c)– 93 kJmol–1d)245 kJmol–1Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Bond dissociation enthalpy of H2, Cl2 and HCl are 434 , 242 and 431 kJ mol–1 respectively.Enthalpy of formation of HCl is : [2008]a)93 kJ mol–1b)– 245 kJmol–1c)– 93 kJmol–1d)245 kJmol–1Correct answer is option 'C'. Can you explain this answer?.
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