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Sat 28 Dec, 2013 01:24 am
Thanks in advance.
Use the heat of formation of water (H2O) and divide by 2. The OH bond is one of the strongest chemical bonds and since water involves two of these (covalent) bonds.
Another strong bond is HF. So you could compare the heat of formation of HF with that of the OH heat of formation of H2O.
Rap