If a `298K` the bond energies of `C-H,C-C,C=C` and `H-H` bonds are respectivly `414, 347, 615KJmol^(-1)` , the vlaue of enthalpy change for the reaction `H_(2)C=CH_(2)(g)+H_(2)(g)+H_(2)(g)rarrH_(3)C-CH_(3)(g)` at `298K` will beA. `-250 kJ`B. `+125 kJ`C. `-125 kJ`D. `+250 kJ`

If a `298K` the bond energies of `C-H,C-C,C=C` and `H-H` bonds are res

1.	If a `298K` the bond energies of `C-H,C-C,C=C` and `H-H` bonds are respectivly `414, 347, 615KJmol^(-1)` , the vlaue of enthalpy change for the reaction `H_(2)C=CH_(2)(g)+H_(2)(g)+H_(2)(g)rarrH_(3)C-CH_(3)(g)` at `298K` will beA. `-250 kJ`B. `+125 kJ`C. `-125 kJ`D. `+250 kJ`
Answer» Correct Answer - C `DeltaH=H_(R)-H_(P)`

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If a `298K` the bond energies of `C-H,C-C,C=C` and `H-H` bonds are respectivly `414, 347, 615KJmol^(-1)` , the vlaue of enthalpy change for the reaction `H_(2)C=CH_(2)(g)+H_(2)(g)+H_(2)(g)rarrH_(3)C-CH_(3)(g)` at `298K` will beA. `-250 kJ`B. `+125 kJ`C. `-125 kJ`D. `+250 kJ`

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