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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

1 Answer

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Best answer
Correct Answer - 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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