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Energy required to dissociate 4 gms of H...

Energy required to dissociate 4 gms of `H_(2)(g)` into free atoms is 208 K.cals at `25^(@)C`. The `H-H` bond energy will be

A

104 K.cals

B

1040 K.cals

C

10.4 K. cals

D

208 K. cals

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Verified by Experts

The correct Answer is:
A
`4 gm rarr 2` moles of `H_(2) rarr 208` k cal
`2 gm rarr 1` moles of `H_(2) rarr 104` k. cal
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