The formation enthalpies, H_f^ for H_ (g) and O_ (g) are 220.0 and 250.0 kJ mol^ -1 , respectively, at 298.15...

Question

The formation enthalpies, H_f^ for H_ (g) and O_ (g) are 220.0 and 250.0 kJ mol^ -1 , respectively, at 298.15 K, and H_f^ for H_2O_ (g) is –242.0 kJ mol^ -1 at the same temperature. The average bond enthalpy of the O–H bond in water at 298.15 K is _______ kJ mol^ -1 (nearest integer).

Accepted Answer

466

JEE Main 2025 Chemistry question

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