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Using the data provided, calculate the m...

Using the data provided, calculate the multiple bond energy `(kJ mol^(-1))` of a `C-=C` bond in `C_(2)H_(2)`. That energy is `(` take the bond energy of a `C-H` bond as `350kJ mol^(-1))`.
`2C_((s))+H_(2(g))rarr C_(2)H_(2(g)), Delta=225kJ mol^(-1)`
`2C_((s))rarr 2C_(g)), DeltaH=1410kJ mol^(-1)`
`H_(2(g)) rarr 2H_((g)),DeltaH=330kJ mol^(-1)`

A

`1165`

B

`837`

C

`865`

D

`815`

Text Solution

Verified by Experts

The correct Answer is:
D
`therefore " " DeltaH = +1410 + 330 -(350 xx 2) - epsilon _(C-=C) = 1740 - 700 - 225=+ 815` KJ/mol.
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