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When chlorine gas and hydrogen gas react to form hydrogen chloride, what will be the change of enthalpy of the reaction?(bond energies H-H = 436 kJ/mol Cl-Cl =242 kJ/mol H-CL = 431.5 kJ/mol) +245 kJ/mol +245 kJ/mol -185 kJ/mol -1105 kJ/mol +1105 kJ/mol

When chlorine gas and hydrogen gas react to form hydrogen chloride, what will be the change of enthalpy of the reaction?(bond energies H-H = 436 kJ/mol Cl-Cl =242 kJ/mol H-CL = 431.5 kJ/mol)
 
  1. +245 kJ/mol
  2. +245 kJ/mol
  3. -185 kJ/mol
  4. -1105 kJ/mol
  5. +1105 kJ/mol

Grade:11

1 Answers

Shivangi Khatter
askIITians Faculty 468 Points
2 years ago
dear student
the correct answer is(C)
Enthalpy change = 436+242-863 = -185kJ/mole

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