🛠️ JEE🧪 Chemistry

The formation enthalpies, \(\Delta {{H}_{f}}^{⊖}\) for \({H}_{(g)}\) and \({O}_{(g)}\) are 220.0 and \(250.0kJmo{l}^{-1}…

Q1

The formation enthalpies, \(\Delta {{H}_{f}}^{⊖}\) for \({H}_{(g)}\) and \({O}_{(g)}\) are 220.0 and \(250.0kJmo{l}^{-1}\), respectively, at 298.15 K , and \(\Delta {{H}_{f}}^{⊖}\) for \({H}_{2}{O}_{(g)}\)is \(-242.0kJmo{l}^{-1}\) at the same temperature. The average bond enthalpy of the \(O-H\) bond in water at 298.15 K is _______ \(kJmo{l}^{-1}\) (nearest integer)

[JEE Main 2025, 28 Jan (Shift 1)]

a

466

b

233

c

345

d

412

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