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Chemistry · THERMODYNAMICS
हिन्दीThe standard enthalpy of atomization of methane, \( \text{CH}_4(\text{g}) \), is \( 1665\text{ kJ mol}^{-1} \). The mean \( \text{C}-\text{H} \) bond enthalpy in methane is:
Correct answer · Option 2
416.25 kJ mol\( ^{-1} \)
Explanation
Mean bond enthalpy of \( \text{C}-\text{H} \) in \( \text{CH}_4 \) is \( \frac{1}{4} \Delta_a H^\ominus = \frac{1665}{4} = 416.25\text{ kJ mol}^{-1} \).
