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Given that Cu(4)(g) +360 kJ rarr C(g) ...

Given that
`Cu_(4)(g) +360 kJ rarr C(g) +4H(g)`
`C_(2)H_(6)(g) +620 kJ rarr 2C(g) +6H(g)`
The value of `C-C` bond enegry is

A

`260 kJ mol^(-1)`

B

`180 kJ mol^(-1)`

C

`130 kJ mol^(-1)`

D

`80 kJ mol^(-1)`

Text Solution

Verified by Experts

`CH_(4)rarr C(g) +4H(g),DeltaH = 360 kJ`
`C_(2)H_(6)rarr 2C(g)+6H(g), DeltaH = 620 kJ`
`:. DeltaH_(C-C) = (DeltaH_(C_(2)H_(6))-6DeltaH_(H)) = 80 kcal mol^(-1)`
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