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Enthalpy change for the reaction 2H(2...

Enthalpy change for the reaction
`2H(2)(g)rarr4H(g)` is `-869.6kJ`
The dissociation energy of `H--H`bond is:

A

`+217.4 kJ`

B

`-431.8 kJ`

C

`-869.6kJ`

D

`+434.8 kJ`

Text Solution

Verified by Experts

The correct Answer is:
B
`2H_(2)(g)to4H(g)`, `DeltaH=869.6 kJ`
or `H_(2)(g)to2H(g)`, `DeltaH=+(869.6)/(2)`
`=434.8 kJ`
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