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The bond dissociation energies of two O-...

The bond dissociation energies of two O-H bond in water are: `H_2O(g)rarr H(g)+OH(g), Delta H=497.8 KJ mol^(-1)`
`OH(g)rarr H(g)+O(g), Delta H=428.5 KJ mol^(-1)` bond energy of O-H bond is

A

`498 kJ mol^-1`

B

`463 kJ mol^-1`

C

`428 kJ mol^-1`

D

`70 kJ mol^-1`

Text Solution

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The correct Answer is:
B
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