JEE Main Chemistry question
From the following bond energies: H-H bond energy: , C=C bond energy: , C-C bond energy: , C-H bond energy: . Enthalpy for the reaction
= + H{-}H → {-}
will be
Answer: (D)
Solution
Bonds broken (reactants: ethylene with 1 C=C + 4 C-H, plus 1 H-H): . Bonds formed
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