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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

`+434.8 kJ`

B

`+217.4 kJ`

C

`434.8 kJ`

D

`869.6 kJ`

Text Solution

Verified by Experts

The correct Answer is:
C
`4H(g)to2H_(2)` , `DeltaH=-869.6 kJ`
`4H_(2)to4(g)`, `DeltaH=869.6 kJ`
`H_(2)to2H(g)` , `DeltaH=(869.6)/(2)=438.8 kJ`
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