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Calculate the enthalpy change (DeltaH) i...

Calculate the enthalpy change `(DeltaH)` in `KJ mol^(-1)`, of the follwing reaction
`2C_(2)H_(2)(g)+50_(2) (g)rarr4CO_(2)(g)+2H_(2)O(g)`
givin average bond enthalpies of various bonds i.e.,
`C-H,C=C,O=O,O-H as 414,814,499,724` and `640 kJ mol^(-1) respectively. Express magnitude only.

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