`H_(2)(g) +(1)/(2)O_(2)(g) rarr H_(2)O(g) DeltaH =- 242 kJ mol^(-1)`
Bond energy of `H_(2)` and `O_(2)` is `436` and `500 kJ mol^(-1)`, respectively. What is bond energy of `O-H` bond?

Explanation

To find the bond energy of the O-H bond in the reaction:

\[ H_2(g) + \frac{1}{2}O_2(g) \rightarrow H_2O(g) \]
with \(\Delta H = -242 \, \text{kJ mol}^{-1}\), we can use the bond energies of the reactants and products.

### Step-by-Step Solution:

1. **Identify the Bonds in Reactants and Products:**
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