MCQ
For the reaction $OF_{2(g)} \to O_{(g)} + 2F_{(g)} ,\, \Delta _{rxn}H$ is $368\,kJ$. What is the average $O—F$ bond energy ? ....$kJ$
- ✓$184$
- B$368$
- C$536$
- D$736$
✓
Answer
Correct option: A.
$184$
a
$F-O-F \to O + 2F$ $\Delta H =368\,kJ$
$F-O-F \to O + 2F$ $\Delta H =368\,kJ$
$\therefore $ Av. $O-F$ Bond energy $=\frac {368}{2}=184$
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