MCQ
The ${H_2}O(g)$ molecule dissociates as $(i)$ ${H_2}O(g) \to H(g) + OH(g);\,\Delta H = 490\,kJ$ $(ii)$ $OH(g) \to H(g) + O(g);\,\Delta H = 424\,kJ$The average bond energy (in $kJ$) for water is
- A$490$
- B$424$
- C$914$
- ✓$914/2$
✓
Answer
Correct option: D.
$914/2$
(d)eq. $(i)$ $ + $ eq. $(ii)$ find the required result and divide by $2.$
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