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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)rarr 2H_(2)O(2H_(2)O(2H-O-H)`
`Delta_(r)H= 2xx BE(H_(2)) +BE(O_(2)) - 4 xx BE(O-H)-571= 2 xx 435 +498 -4 xxBE (O-H) ` or `BE(O-H) =484`
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