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The enthalpy changes at 298 K in succes...

The enthalpy changes at 298 K in successive breaking of `O-H` bonds of water, are
`H_(2)O(g) rarr H(g)+OH(g),DeltaH=498kJ mol^(-1)`
`OH(g) rarr H(g)+O(g), DeltaH =428 kJ mol^(-1)`
The bond energy of the O-H bond is

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Verified by Experts

The correct Answer is:
463
Bond energy is the average energy required to break each bond of the same type in a compound.
`DeltaH_(av)=(498+428)/(2)=463 kJ"mol"^(-1)`.
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