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For the reaction: 2H(2)(g) +O(2)(g) ra...

For the reaction:
`2H_(2)(g) +O_(2)(g) rarr 2H_(2)O(g), DeltaH =- 571 kJ`
bond enegry of `(H-H) = 435 kJ` and of `(O=O) = 498 kJ`. Then, calculate the average bond enegry of `(O-H)` bond using the above data.

A

`484`

B

`-484`

C

`271`

D

`-271`

Text Solution

Verified by Experts

The correct Answer is:
A
For the reaction
`2H_(2)+O_(2)to2H_(2)O(2H-OH)`
`DeltaH=2xxBE(H_(2))+BE(O_(2))-4xxBE(O-H)`
`-571=2xx435+4984xxBE(O-H)`
`BE(O-H)=484`
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