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NEET 2008 Chemistry question

ChemistryThermodynamicsNEET 2008

Bond dissociation enthalpy of , and are 434, 242 and respectively. Enthalpy of formation of is

Answer: (4)

Solution

Reaction: . Enthalpy change (energy to break bonds) (energy released on forming bonds). for 2 mol of HCl. Enthalpy of

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Question ID VK-089994