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If values of Delta(f)H^(Theta) of ICI(g)...

If values of `Delta_(f)H^(Theta)` of `ICI(g),CI(g)`, and `I(g)` are, respectively, `17.57,121,34`, and `106.96 J mol^(-1)`. The value of `I-CI` (bond energy) in `J mol^(-1)` is

A

`17.57`

B

`210.73`

C

`35.15`

D

`106.96`

Text Solution

Verified by Experts

The process will be
`I(g) +CI(g) rarr I-CI(g),DeltaH^(Theta) = 17.57J mol^(-1)`
`DeltaH^(Theta) =` Heat of atomisation of `I(g)` and `CI(g)`-Bond enegry of `I-CI` bond
`17.51 = 121.34 +106.96-x`
`x = 210.73 J mol^(-1)`
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