The formation enthalpies, ∆ H_f^{\circ} for {\H}_{( {\g})} and {\O}_{( {\g})} are 220.0 and 250.0 {\kJ} {\mol}^{-1}, respectively, at 298.15 K , and ∆ {\H}_{ {\f}}^{\circ} for {\H}_2 {\O}_{( {\g})} is -242.0 {\kJ} {\mol}^{-1} at the same temperature. The average bound enthalpy of the {\O}- {\H} bond in water at 298.15 K is ______ kJ {\mol}^{-1} (nearest integer). [28 Jan 2025 Shift 1]

Chemical Thermodynamics Part 2

Section: Chemistry

Question : 10 of 100

Marks: +1, -0

The formation enthalpies, ∆Hf∘ for H(g) and O(g) are 220.0 and 250.0‌kJ‌mol−1, respectively, at 298.15 K , and ∆Hf∘ for H2O(g) is −242.0‌kJ‌mol−1 at the same temperature. The average bound enthalpy of the O−H bond in water at 298.15 K is ______ kJ mol−1 (nearest integer).

[28 Jan 2025 Shift 1]

Your Answer:

Validate

Go to Question:

Prev Question

Next Question